It is narrated from Hazrat Abu Amir Ash'ari (may Allah be pleased with him) that one of his men was killed in the Battle of Autas. The Prophet (peace and blessings be upon him) said, "Amir! Did you not feel any sense of honor?" Abu Amir (may Allah be pleased with him) recited this verse: "O you who believe! Take care of your own selves. If you are guided, no one who goes astray can harm you." Upon this, the Prophet (peace and blessings be upon him) became angry and said, "Where are you going? The meaning of the verse is: O believers! If you are guided, then misguided disbelievers cannot harm you in any way."