Sahih Bukhari · Hadith 2274

حدثنا مسدد، حدثنا عبد الواحد، حدثنا معمر، عن ابن طاوس، عن أبيه، عن ابن عباس رضى الله عنهما نهى رسول الله صلى الله عليه وسلم أن يتلقى الركبان، ولا يبيع حاضر لباد‏.‏ قلت يا ابن عباس ما قوله لا يبيع حاضر لباد قال لا يكون له سمسارا‏.‏

Narrated Tawus: Ibn `Abbas said, "The Prophet forbade the meeting of caravans (on the way) and ordained that no townsman is permitted to sell things on behalf of a bedouin." I asked Ibn `Abbas, "What is the meaning of his saying, 'No townsman is permitted to sell things on behalf of a bedouin.' " He replied, "He should not work as a broker for him."

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