"Where the contract of employment limits the same to the sale of certain property, it must be made to appear that the property sold was within the description. Maze v. Gordon, 96 Cal. 61, 30 P. 962. Where a broker is, by agreement, to receive commissions for procuring a purchaser for land only on condition that a sale is made to a certain person, he can not recover if a sale to such purchaser is not consummated, owing to the fault of either of the parties. Lyle v. Uni. Land, etc., Co. (Tex. Civ. App. '95), 30 S. W. 723. Compare Secs. 526 and 527. A qualification of a broker's right to commissions for a sale of property, that, "if sold to a party sent by Mr. Rapp all this week, then no commission is to be paid; also, A. Ozias," limits the time within which a sale to such persons might be made without payment of commissions, to " this week.'* Gaty v. Clark, 28 Mo. App. 332; Smith v. Tate, 82 Va. 657.