5. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad and Ali ibn Ibrahim has narrated from his father all from Ibn Abi ‘Umayr from Hammad from al-Halabiy who has said the following: “This is concerning my question before abu ‘Abd Allah عليه السلام, about the case of a man to whom I made advance payment for foodstuff. When the time arrived he sent to me dirhams. He (the Imam) said, ‘Buy foodstuff for yourself and compensate for your right.’ He (the Imam) then said, ‘I deem it proper that you appoint someone else for such work until you receive what belongs to you and you alone must not undertake the task and work.’”