Narrated Anas bin Malik: On the day of the Conquest, the Prophet entered Mecca, wearing a helmet on his head. When he took it off, a man came and said, Ibn Khatal is clinging to the curtain of the Ka`ba. The Prophet said, Kill him. (Malik a sub-narrator said, On that day the Prophet was not in a state of Ihram as it appeared to us, and Allah knows better. )