Sahih Bukhari · Hadith 2149

حدثنا مسدد، حدثنا معتمر، قال سمعت أبي يقول، حدثنا أبو عثمان، عن عبد الله بن مسعود رضى الله عنه قال من اشترى شاة محفلة، فردها فليرد معها صاعا‏.‏ ونهى النبي صلى الله عليه وسلم أن تلقى البيوع‏.‏

Narrated `Abdullah bin Mas`ud: Whoever buys a sheep which has not been milked for a long time, has the option of returning it along with one Sa of dates; and the Prophet forbade going to meet the seller on the way (as he has no knowledge of the market price and he may sell his goods at a low price).

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).