Muhammad or Abdullah bin Mujahid said: Abdullah bin Shaddad and Abu Burdah disputed over salaf (payment in advance). They sent me to Ibn Abi Awfa and I asked him (about it) and he replied: We used to pay in advance (salaf) during the time of the Messenger of Allah صلی اللہ علیہ وسلم, Abu Bakr and Umar in wheat, barley, dates and raisins. Ibn Kathir added: to those people who did not possess these things. The agreed version then goes: I then asked Ibn Abza who gave a similar reply.