A contract which gives to a broker the exclusive right to procure a purchaser of real estate of the owner for a specified price, with the right to retain for his services any excess which the purchaser may pay, and which provides that the "option" shall run to a designated date, and that the owner will furnish an abstract of title and warranty deed to the broker or to any one designated by him, is an agreement to pay a commission for selling land, the word "option" relating to the exclusive right to sell within the limited time. Brittson v. Smith, 130 N. W. 599, 105 Mich. 222.