Jerry Bird and Jennie Bird owned a 60-acre farm in the county of Oakland. January 7, 1926, they sold this farm on land contract to Robert H. Jeffers and B. Ross McKenzie. Robert H. Jeffers died in January, 1929. February 14, 1929, his will was admitted to probate by the probate court of Wayne county. By his will, Robert H. Jeffers gave his property to Florence A. Jeffers and the Detroit Trust Company, in trust. Florence A. Jeffers and the Detroit Trust Company were named as executors and their appointment was, upon the admission of the will to probate, confirmed by the probate court of Wayne county. February 28, 1929, commissioners on claims were appointed by the probate court of Wayne county, and these commissioners had the first hearing on claims May 2, 1929, and the second hearing on claims on June 28, 1929. It is conceded notice of hearing of claims was properly given. July 8, 1929, the commissioners filed a report of their doings as commissioners on claims. October 24, 1930, the final account of the Detroit Trust Company and of Florence A. Jeffers, executors of the estate of Robert H. Jeffers, deceased, was allowed; and June 22, 1932, the Detroit Trust Company filed a receipt, as trustee of the estate, acknowledging the receipt of the property belonging to it from the Detroit Trust Company and Florence Jeffers, as executors; and thereupon the executors were discharged and their bond cancelled.

April 28, 1933, plaintiffs filed a bill of complaint, and July 1, 1933, filed an amended bill of complaint for an accounting of the amount due under the land contract and for a decree of personal liability against *132B. Ross McKenzie. It asked that the court impress a trust upon all the funds in the hands of or under the control of the Detroit Trust Company belonging to the estate of Robert H. Jeffers, deceased, to an amount sufficient to pay the claim of plaintiffs, and costs, such trust to extend to any and all securities, or real and personal property, belonging to the estate of Robert H. Jeffers, deceased; that if the Detroit Trust Company was found to have sufficient assets in its hands to pay the amount due on the contract of plaintiffs, it be decreed to pay their claim; and if there was not sufficient money on hand, then that defendants Florence Jeffers, Dorothy Jeffers and Robert Jeffers be ordered to pay the same. July 11,1933, defendants filed a general and a specific answer.

March 30, 1933, plaintiffs filed a petition in the probate court to revive the commission on claims in the estate of Robert IT. Jeffers, deceased. March 31, 1933, an order reviving the commission on claims in that estate was entered by the probate court of Wayne county. March 31, 1933, Florence A. Jeffers and the Detroit Trust Company moved the probate court to revoke the order of March 31, 1933, reviving the commission on claims in the estate of Robert H. Jeffers, deceased, upon the ground the probate court had no jurisdiction to revive the same. May 23, 1933, the probate court set aside its order reviving commission on claims, and plaintiffs appealed to the circuit court where, March 23, 1934, that court held the probate court was without jurisdiction to revive the. commission on claims in the estate of Robert H. Jeffers, deceased, und from that decision plaintiffs appeal.

The chancery case was heard upon its merits, and, March 27,1934, an opinion was filed by the trial court *133holding for plaintiffs against the Detroit Trust Company and Florence Jeffers, as trustees. June '9, 1934, a supplemental opinon was filed. June 20, 1934, decree was entered in accordance with the opinions of the trial court before that time filed.

Appellants Detroit Trust Company and Florence Jeffers appeal from that decree, claiming the probate court had no power to revive the commission on claims in the matter of the estate of Robert H. Jeffers, deceased, after claims had been presented to the commissioners and claims had been paid, the residue of the estate assigned and transferred to the testamentary trustees, and the executors discharged and their bonds cancelled; that when the estate of a land contract vendee has been closed, the vendors therein may not prove a claim for the purchase price which is to accrue upon the land contract; that the continuance of payments of installments due upon a land contract does not amount to an assumption thereof; that the testamentary trustees stand as assignees as to a land contract which passed to them by order of assignment of the estate of the vendee in the probate court; and that the payments made upon the land contract by the executors of the estate of Robert H. Jeffers, deceased, raise no .equitable grounds for relief against the trustees of that estate as such.

Plaintiffs-appellees and cross-appellants contend the trustees of the estate of Robert H. Jeffers, deceased, renewed and continued the contract for the purchase of the lands in question by making payments upon the land contract, by listing the same in the probate court as an asset of the estate of deceased, and by collecting the rents, income and profits therefrom after his death are now estopped from denying ratification thereof; that the covenants in *134the land contract are made binding upon the heirs and assignees of the vendee, and are binding upon the testamentary trustees of the estate which took over the land; that the commission on claims in the probate court could have been revived, and were in fact revived; that a claim may be filed within a year after it accrues, under 3 Comp. Laws 1929, § 15712, despite the order of the probate court assigning the residue of the estate, discharging the executors and cancelling their bond as such; that the executors waived the filing of a claim upon the contract by recognizing the contract, ratifying its terms, and making payments thereon; that equity will relieve where the executors are also the trustees of the estate and made payments upon the contract, notwithstanding the executors have been discharged and the same persons have been appointed testamentary trustees; that where a claim under a land contract is established against testamentary trustees, the land need not be sold before resort may be had to the body of the estate of the deceased; that where testamentary trustees made payments to heirs of the deceased after the known insolvency of the estate, and before and after the filing of a known claim of liability as vendee upon a contract and the filing of a bill to enforce the same, creditors are entitled to a refund from the heirs of said estate upon the theory of a devastavit.

Probate courts have no power or authority except that conferred upon them by the statutes providing for their creation. When the estate of a deceased person is probated, commissioners on claims may be appointed by the probate court (3 Comp. Laws 1929, § 15674), whose duty it shall be to appoint convenient times and places of meeting, and to give public notice thereof (3 Comp. Laws 1929, § 15675). Cred*135itors of the deceased person are given not less than four months, nor more than one year, to present their claims to the commissioners for allowance (3 Comp. Laws 1929, § 15678), which time, under some circumstances, may be extended by the probate court to two years (3 Comp. Laws 1929, § 15679).

On the application of a creditor who has failed to present his claim within the time fixed, if made at any time before the estate is closed, the probate judge may revive the commission on claims. 3 Comp. Laws 1929, § 15680. This right to revive the commission on claims before the estate is closed is a matter of right and not of discretion. Hart v. Shiawassee Circuit Judge, 56 Mich. 592; Quinn v. McGovern, 97 Mich. 114; Heavenrich v. Nichols’ Estate, 113 Mich. 508; Draper v. Brown, 153 Mich. 320; Seilnacht v. Wayne Probate Judge, 201 Mich. 536.

The statutes providing for the administration of the estates of deceased persons contemplate an estate shall be closed and the assets of the estate, after the payment of creditors, distributed; and, when closed, the probate court may not revive the commission on claims. Brown v. Forsche, 43 Mich. 492; Ogooshevitz v. Arnold, 197 Mich. 203; Seilnacht v. Wayne Probate Judge, supra.

Every person having a claim against a deceased person proper to be allowed by the commissioners on claims who shall not, after the publication of notice as required by statute, exhibit his claim to the commissioners within the time limited by the court for that purpose, shall be forever barred from recovering such demand, or from setting off the same in any action whatever. 3 Comp. Laws 1929, § 15687; Clark v. Davis, 32 Mich. 154; McGee v. *136Estate of McDonald, 66 Mich. 628; Seilnacht v. Wayne Probate Judge, supra.

The statutes recognize but two classes of claims which may be presented against the estate of a deceased person — those which are absolute, and those which are contingent and which at the proper time must be proved in a direct proceeding instituted for the purpose and with a right of appeal, or it is barred. Clark v. Davis, supra.

Plaintiffs’ claim was not a contingent claim (Osmun v. Oakland Circuit Judge, 107 Mich. 27); it was a liability upon a fixed and definite contract in writing. Its existence or nonexistence did not depend upon some conting-ency which might never happen (24 C. J. p. 293), a contingent claim being-one where the liability depends upon some future event which may or may not happen, and, therefore, makes it now wholly uncertain whether there ever will be a liability. Sargent’s Adm’r v. Kimball’s Adm’r, 37 Vt. 320.

A contingent claim is one which does not exist but may possibly hereafter arise, one whose possible existence depends upon an uncertain future event— upon a contingency.

The claim here involved was not contingent, but absolute — fixed by definite contract in writing-signed by the deceased in his lifetime, and, therefore, the statutory provisions (3 Comp. Laws 1929, §§ 15708-15723) relating to contingent claims have no application.

Plaintiffs ’ claim was barred by reason of not having been presented to the probate court within the period fixed by statute. The estate of Jeffers was closed and the right of plaintiffs to present their claim at an end, and their claim as creditors against such estate barred. Showers v. Robinson, 43 Mich. *137502; Ogooshevitz v. Arnold, supra; Seilnacht v. Wayne Probate Judge, supra.

The bill of complaint does not seek to foreclose the land contract. It asks substantially the same relief in equity that might have been had in probate court had plaintiffs’ claim been a contingent one properly proved and established. But it is not the province of a court of equity to allow or disallow claims against the estates of deceased persons, or to administer estates, especially after the subject has been entered upon by the probate court. Shelden v. Walbridge, 44 Mich. 251; Dickinson v. Seaver, 44 Mich. 624; Lafferty v. People’s Savings Bank, 76 Mich. 35; Draper v. Brown, supra.

The claim of plaintiffs might have been presented and passed upon by the commissioners on claims in the Jeffers estate and allowed at its then present value. 3 Comp. Laws 1929, § 15685. But it was not presented, and is now barred (3 Comp. Laws 1929, § 15687); and the estate of Jeffers administered and closed and the property and assets of the estate distributed, except that part turned over to testamentary trustees who receipted therefor and entered upon the administration of their trust. The offices of executor and testamentary trustee are separate and distinct. The first terminated when the second began. Gibney v. Allen, 156 Mich. 301. Plaintiffs might have foreclosed their contract at any time, but, instead of doing so, seek in equity another remedy.

The heirs or devisees of Jeffers’ estate, or the executors of such estate, might institute proceedings to compel a conveyance of the real estate by plaintiffs. 3 Comp. Laws 1929, § 15673. But it is not made mandatory upon them to do so. The heirs or devisees of Jeffers have not instituted such proceed*138ings, and the executors of such estate have ceased to exist.

After the execution of the contract, Jeffers, the vendee, became the equitable owner thereof entitled to possession except as otherwise stipulated in the contract, the vendors holding the title to the premises as security for the payment of the purchase price.

The executors of the estate of Jeffers, upon his death, became the assignees of the vendee, Jeffers, by operation of law. There was no personal assumption by the executor or testamentary trustee of liability under this contract to pay. It was the duty of the executors and the duty of the trustees of Jeffers’ estate to inventory this property of which the estate was the equitable owner, and to account for the rents, income and the profits therefrom. But there was no assumption or agreement to pay upon the part of the executors of Jeffers’ estate, or on the part of the testamentary trustees appointed therein, and consequently they may not be held liable in this proceeding.

We do not pass upon whether there may be liability arising upon a deficiency after sale by foreclosure of the land contract. That question is not here.

Judgment at law affirmed, with costs. Decree of the trial court, in chancery, reversed and bill of complaint dismissed, with costs.