An agreement to sell is a legal contract between a buyer and a seller outlining the terms and conditions of a future sale of goods or property. It establishes the intention of both parties to enter into a transaction, but the actual transfer of ownership occurs at a later date, usually upon fulfillment of certain conditions or payment of the agreed-upon price. This agreement typically includes details such as the description of the goods or property, price, payment terms, delivery terms, and any other relevant conditions.