Musannaf Ibn Abi Shayba 13:717

Abu Bakr narrated to us, he said: Kathir ibn Hisham narrated to us, from Ja'far ibn Burqan, from Zayd ibn Abi Unaysa, that Ali was asked about a man who lends a loan to a man, and [the borrower] gives him a gift. He said: "That is the hastened usury."