It is narrated from Sayyiduna Sahl bin Hunaif (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said to him: "You are my envoy and messenger to the people of Makkah, so tell them that the Messenger of Allah (peace and blessings be upon him) sends you greetings of peace and commands you not to use bones or dung for istinja (purification)." In one narration, Abu Asim said: «ينهاكم أو يأمركم» .