What did the Prophet Muhammad (saw) do after being called to prayer while holding a piece of mutton and a knife (saw)?
 Narrated `Amr bin Umaiyya:                     That he saw Allah's Apostle cutting a piece of mutton from its shoulder part he was carrying in his hand. When he was called for prayer, he put it down and the knife with which he was cutting it. Then he stood up and offered the prayer without performing new ablution.