The Messenger of Allah ﷺ forbade meeting merchants on their way to market to buy their goods before they reached it.
نهي رسول الله ﷺ أن يتلقى الجلب.
No references are available.
Bukhari narrated it in the Book of Sales (2162) via Saeed bin Abu Saeed, and Muslim narrated it in the Book of Sales (1519:16) via Ibn Sirin, both of them from Abu Hurairah. The wording is Muslim's.