Abdullah bin Abi Mujahid says that there was a difference of opinion between Hazrat Abdullah bin Shaddad (may Allah be pleased with him) and Abu Burdah (may Allah be pleased with him) regarding the issue of credit sale. Both of them sent me to Hazrat Abdullah bin Abi Awfa (may Allah be pleased with him). I asked him about this issue, and he said: In the time of the Prophet (peace and blessings of Allah be upon him) and the two Shaykhs (may Allah be pleased with them), we used to sell wheat, barley, raisins, or whatever things people had, on credit. Then I went to Hazrat Abdur Rahman bin Abzi (may Allah be pleased with him), and he also said the same thing.