Sahih Muslim 4119
صحيح مسلم#4119SahihIbn 'Abbas (Allah be pleased with them) reported that when Allah's Messenger (ﷺ) came to (Medina) and the people were paying in advance (for the fruits, etc.), he said to them:He who makes an advance payment should not make advance payment except for a specified measure and weight (and for a specified period)
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: 22:158