Sahih al-Bukhari 1846

It is related from Anas ibn Malik, "The Messenger of Allah, may Allah bless him and grant him peace, entered Makka in the year of the Conquest with a helmet on his head. When he removed it, a man came and said, 'Ibn Khatal is holding onto the cover of the Ka'ba.' He said, 'Kill him.'" [The man was Abu Bazra al-Aslami. 'Abdullah ibn Khatal had become Muslim. When the Prophet, may Allah bless him and grant him peace, sent him to collect zakat along with another man from the Ansar, Ibn Khatal had murdered the Ansari on the road and became an apostate. He had two slavegirls who used to sing satirical poems about the Prophet, may Allah bless him and grant him peace.]