Maliks Muwatta Book 32, Hadith Number 10.
Yahya said that Malik spoke about an investor who made a qirad loan to a man.
He said, “When the investment is large, the travelling expenses of the agent are taken from it. He can use it to eat and clothe himself in an acceptable fashion according to the size of the investment. If it saves him trouble, he can take a wage from some of the capital, if it is large, and he cannot support himself. There are certain jobs which an agent or his like are not responsible for, amongst them are collecting debts, transporting the goods, loading up and so forth. He can hire from the capital someone to do that for him. The agent should not spend from the capital nor clothe himself from it while he resides with his family. It is only permitted for him to have expenses when he travels for the investment. The expenses are taken from the capital. If he is only trading with the property in the city in which he resides, he has no expenses from the capital and no clothing.”
Malik spoke about an investor who paid qirad money to a man, and the agent went out with it and with his own capital. He said, “The expenses come from the qirad and from his own capital according to their proportions.”