Sahih Muslim 4118
صحيح مسلم#4118SahihIbn 'Abbas (Allah be pleased with them) reported that when Allah's Prophet (ﷺ) came to Medina, they were paying one and two years in advance for fruits, so he said:Those who pay in advance for anything must do so for a specified weight and for a definite time
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 22:157