It is narrated from Ja'far bin Amr bin Umayyah that his father, Sayyiduna Amr bin Umayyah (may Allah be pleased with him), informed him that he saw the Messenger of Allah (peace and blessings be upon him) cutting and eating a piece of meat from a goat with a knife. In the meantime, he was called for prayer, so he put down the knife with which he was cutting the meat, then stood up and performed the prayer without performing ablution.