Hazrat Rabee' says that I asked Hazrat Abu Ja'far (may Allah have mercy on him) that I bought wheat from a person, then he gave me some, then his stock of food ran out. He had nothing left to give me. He said, "Sell me from your wheat so that I can give you (your remaining share)?" Hazrat Abu Ja'far replied: "Do not go near this at all, this is clear usury."