delivered the opinion of the Court.

The issue in this proceeding is whether the purchaser of a hereditary interest in a particular rural property can redeem the portions sold later by the other coheirs to a third person.

Carmen, Juan José, Fernando and Francisca González Pedraza, and Ernesto Cuebas, together with four other persons, were owners each, by hereditary title, of one-ninth of a property of 161 cuerdas situated in the Municipality of Naguabo.

On March 8, 1956 coheiress Carmen González Pedraza sold her interest in that real property to petitioner Alberto R. Fuertes, who recorded it in his name in the Registry of Property. When the term to exercise the right of legal redemption against him had expired the purchase made by Fuertes received the consent of the remaining coheirs, the same becoming final and Fuertes the absolute co-owner of one-ninth of the property.

On May 5, 1956 the coheirs Juan José, Fernando and Francisca González Pedraza and Ernesto Cuebas,1 sold their *481shares to respondent Fulgencia Arzón Méndez. Four days', later, Fuertes filed a complaint in the Superior Court, Huma-eao Part, against Mrs. Arzón Méndez to redeem the four-ninths of the property purchased by her, setting forth in his complaint as follows:

“The plaintiff alleges:

“1. That the plaintiff is owner of an undivided share equivalent to one-ninth of the property which is hereinafter described, defendant Fulgencia Arzón Méndez being owner of four-ninths, thereof, Germán Morales Garcia, the heirs of Antonio González,. María González Pedraza and José González Pedraza each being owner of one-ninth of said property. The property is described as follows: (description).

“2. That the plaintiff purchased his one-ninth share from Carmen González Pedraza (sic) by deed No. 65 executed March 8, 1956, before Notary Faustino R. Aponte and which is recorded on page 139 of volume 45 of Naguabo, properti^ No. 198 inscription-.

“3. That by deed No. 102 executed May 5, 1956, before Notary Faustino R. Aponte the defendant purchased an undivided share of four-ninths of the aforesaid property from Ernesto Cuebas and his wife Sara Luisa González, Juan José González, Fernando González and Francisco González for the sum of eight thousand ($8,000) dollars.

“4. That Ernesto Cuebas, Sara Luisa, Juan José, Fernando and Francisca González were owners of four-ninths of said property and sold their interest therein to a stranger such as the defendant.

“5. That availing himself of the right of legal redemption the plaintiff wishes to subrogate himself in the place of the purchaser-defendant under the same conditions stipulated in the contract of the sale and shall reimburse to the latter, not only the price of the sale, but also the expenses of the contract and any other lawful expenses arising from the sale and the necessary and useful expenses incurred in the property sought to be redeemed which property is still today in an undivided state, said expenses being estimated by the plaintiff in the sum of $50 but plaintiff being willing to pay any amount in excess thereof.

“6. That today date (sic) the plaintiff has deposited in the Humacao Part of the Superior Court of Puerto Rico the purchase *482price of eight thousand dollars in a certified check and also $50 more which he estimates as the maximum lawful amount of the expenses of the contract of sale, totaling $8,050, both checks for the defendant, in the name of the clerk of the court.

“7. That the plaintiff agrees and binds himself not to sell for four years the interest in the property sought to be redeemed which promise he solemnly makes so that it can be subject to any pronouncement in whatever judgment might be finally entered.” — Italics ours.

The defendant appeared and moved to dismiss the complaint on the ground that it does not state facts sufficient to constitute a cause of action. After the motion was argued the lower court considered that the action exercised by Fuer-tes was the hereditary redemption authorized by § 1020 of the Civil Code and dismissed the complaint with costs and attorney’s fees on plaintiff on the ground that “the plaintiff in this case is a stranger to the estate and the coheir’s right to exercise the action of redemption is not transferable to him because he acquired said interest by inheritance.”

The plaintiff appealed and in his brief alleges that the trial court erred in deciding that he lacked the right to exercise the legal redemption and in the application of law to the facts of the case.

Plaintiff-petitioner is right. The theory of the lower court as to the nature of the action is manifestly erroneous and untenable.

A simple reading of the allegations of the complaint already copied suffices to conclude that redeemer Fuertes was using his juridical status of cotenant or co-owner to file his action. None of those allegations take to the interpretation that his vendor, coheiress Carmen González Pedraza had transferred her right of redemption to him nor that he expected to be considered a coheir for the purposes of seeking the redemption pursuant to § 1020 of the Civil Code.2

*483In the course of the discussion of the motion to dismiss, the plaintiff’s attorney said that he was litigating as “co-owner of that property”; and counsel for purchaser-defendant stated, in part, that it “involves a redemption under § 1412, that is, right of redemption of co-owners.” 3 The court in its decision stated:

“The plaintiff’s contention is that pursuant to § 326 of the Civil Code, 1930 edition (defining common ownership of property) as well as § § 1411, 1412, and 1414, the action of redemption lies since there is a community of property and therefore when the defendant acquired four-ninths thereof from the other co-owners of the property the latter have, pursuant to said sections, the right to redeem the portions sold.”

If the intention of plaintiff was to redeem as co-owner, as it actually was, it was the duty of the trial court to consider the sufficiency of the complaint in the light of its own allegations. Although Fuertes was, and still is, a stranger to the estate of which his vendor Carmen González Pedraza formed part, yet at the time when the other coheirs sold 4/9 thereof to Mrs. Arzón Méndez he was not a stranger to the community of property existing in that property. His share in the title thereof had already been consolidated. The fact that he had derived his title from a coheiress did not weaken his right of redemption in his capacity as co-owner of the 4/9 interest sold subsequently to the defendant by other coheirs.4

*484Fuertes never purchased from Carmen González Pedraza, in whole or in part, her hereditary right in the succession of her original predecessor, nor filed his action as assignee or owner of said hereditary right; she conveyed to him only her individual one-ninth share in the rural property described in the complaint, not an undivided, ideal or indeterminate interest in the universality of the estate, nor her untrans-missible legal status of heiress.5 After the term for the *485remaining coheirs to redeem had expired, there arose a situation of co-ownership with regard to him within which it is most fitting to exercise the right of redemption of co-owners granted to every co-owner. Despite the fact that redemption is considered unanimously by the jurisprudential and scientific doctrine as an exceptional right of strict construction and rigorous application,6 our Civil Code makes no distinction or exclusion whatever, to grant it, between a co-owner who is such because he purchased his interest in the thing held in common from a member of a hereditary community and one who purchased it from a member of an ordinary community.7

In order that an action for legal redemption by co-owners may be allowed it is necessary:

1. That there be a community of property; the action be filed by a co-owner and it be an alienation on the part of the thing held in common in favor of a stranger to the community. §§ 1411 and 1412, Civil Code; Rosaly v., Rios, 63 P.R.R. 801, 811 (1944).

2. That the complaint be filed within nine days counted from the date of record of the conveyance in the Registry of Property (not from the date of entry) or in default thereof from the time the redeemer may have had knowledge of the execution of the deed of sale, or from its consummation. *486—§1414, Civil Code; Gómez v. Collazo, 67 P.R.R. 453, 458 (1947) ; Rosaly v. Ríos, supra at 808; 4 Castan, Derecho Civil Español, Común y Foral (8th ed.), 146.

3. That the plaintiff deposit together with his complaint, in the court of jurisdiction (1) the real or true price of the sale, (2) the expenses of the contract, (3) any other lawful payment made by reason of the sale, and (4) the useful and necessary expenses incurred by the thing sold, if known, and if unknown, to furnish bond to insure such deposit when it becomes known. —§§ 1407 and 1415, Civil Code; Llambías v. Pagán, 65 P.R.R. 424, 435 (1945) ; Martínez v. Pirallo, 61 P.R.R. 87, 88 (1942) ; González v. Acha et al., 21 P.R.R., 124, 126 (1914) ; and

4. That the redeemer bind himself not to sell his interest in the property he redeems for four years. —Quiñones v. Alcaide, 72 P.R.R. 670, 674 (1951) and cases cited at 674.

The plaintiff has fully complied with all these requirements- and under the theory of right of legal redemption of co-owners all the facts or requirements necessary for that type of action appear in his complaint.8

In view of the foregoing the judgment appealed from will be reversed and the case remanded to the lower court for further proceedings compatible with this opinion.