Maliks Muwatta Book 32, Hadith Number 14.
Section : Loans in Qirad.
Yahya said that Malik spoke about a man who loaned another man money and then the debtor asked him to leave it with him as a qirad. Malik said, “I do not like that unless he takes his money back from him, and then pays it to him as a qirad if he wishes or if he wishes keep it.”
Malik spoke about an investor who paid a man qirad money and the man told him that it was collected with him and asked him to write it for him as a loan. He said, “I do not like that unless he takes his money from him and then lends it to him or keeps it as he wishes. That is only out of fear that he has lost some of it, and wants to defer it so that he can make up what has been lost of it. That is disapproved of and is not permitted and it is not good.”