“I once said to abu ‘ Abd Allah (a.s.), ‘I pray to Allah to keep my soul in service for your cause, is it permissible to benefit from dead animals?’ He (the Imam) said, ‘No, it is not permissible.’ I then said, ‘It is narrated to us from the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, that he (the Messenger of Allah) passed by a dead sheep and said, “What was wrong with the owners of this sheep? If they could not benefit from its flesh why did they not benefit from its skin?”’ He (the Imam) said, ‘That sheep belonged to Sawdah daughter of Zam‘ah, wife of the Holy Prophet. The sheep was very skinny and weak and its flesh was not useful; so they left it until it died. The Messenger of Allah then said, “What was wrong with the owners of this sheep. If they could not benefit from its flesh why did they not benefit from its skin?”’