A transfer of ownership in a property, where the price is partly paid and partly due, is known as a sale.
In a sale transaction, the ownership (also called title) of the property is transferred from the seller to the buyer in exchange for a price, which may be paid in full or partly paid with the remaining amount agreed to be paid later.
The key elements of a sale include the transfer of ownership, the existence of a price (consideration), and the consent of both parties.
Thus, when ownership is transferred for a price that is partly paid and partly due, the transaction is classified as a sale.
Conclusion:
Sale is the transfer of ownership in a property for a price that is partly paid and partly due.