This action was commenced by defendant in error to compel the plaintiffs in error to assign an interest in a departmental oil and gas lease to defendant in error. The parties ■ will be referred to as plaintiff and defendants, as they appeared in the court below. Judgment was rendered for the plaintiff, and defendants have appealed.

'The defendants procured a departmental oil and gas lease on the lands of Janie Arkansas, a full-blood Mississippi Choctaw Indian. Under the rules and regulations of the Department of the Interior relative to assignments of departmental leases, it is provided:

“No interest in oil lease or use of such lease, shall be sublet, assigned, or transferred, directly or indirectly, without the consent of the Secretary of the Interior.’”

The question to be determined is whether a court of equity will decree' the specific performance of a contract where the validity of the contract depends upon the approval of a third person and where the consent or approval of such third person has not been obtained and tendered at the time the specific performance is sought. Thisi question has been decided by this court in the case of Rice v. Theimer, 45 Okla. 618, 140 Pac. 702, in which the court stated:

“It seems that the test of the enforceability of such a contract is the ability of the party seeking its specific performance to secure the performance of the act (by the third party. When he can secure its performance and tenders a performance thereof, as here, the contract will be specifically enforced; otherwise not.”

In Roquemore & Hall v. Mitchell Bros. (Ala.) 52 South. 423, a portion of the syllabus is as follows:

“Complainant cannot compel specific performance by defendant of his contract to permit plaintiff to carry out defendant’s contract with a county to load gravel from a pit belonging to the county, where the *109 county did not consent to the contract between plaintiff and defendant, since to do so would involve compelling the county to allow complainant to perform its contract with defendant.”

To. the same effect are the following cases: Ellis v. Treat, 236 Fed. 120, 1-19 C. C. A. 330; Wichita Water Company v. City of Wichita, 280 Fed. 710; Ellis v. Small (Mass.) 95 N. E. 79; Martin v. South Blue-field Land Co. (W. Va.) 94 S. E. 493; Hurlburt v. Kantzler, 112 Ill. 482; Musgrove v. Lodges (Kan.) 27 Pac. 121; and Woodward v. Harris and Aspinwall, 3 Sandf. 272.

The plaintiff, not having procured the consent of the Secretary of the Interior to the assignment of the lease in the controversy, could not maintain this action for specific performance of the contract, and the judgment of the trial court is reversed, and cause remanded, with directions to enter judgment for the defendants.