Silsilah as-Sahihah 2127 — One who harms the Prophet and his killer

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) pointed towards his front teeth and said: "Allah became extremely angry with those people who did this to their Prophet. Allah also becomes extremely angry with the man whom the Messenger of Allah, who is engaged in jihad, kills."