And Ibn Sirin, Ata, Ibrahim, and Hasan al-Basri (may Allah have mercy on them) did not consider it objectionable to take wages for acting as an agent. Ibn Abbas (may Allah be pleased with them both) said: If someone is told, "Sell this cloth for such-and-such a price, and whatever is more is yours," then there is no harm in it. Ibn Sirin said: If someone says, "Sell it for such-and-such, and whatever profit there is, it is yours," or (he says) "It will be divided between me and you," then there is no harm in it. The Prophet (peace and blessings of Allah be upon him) said: Muslims are bound by their agreed-upon conditions.

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."