Sa'id bin Jubayr (may Allah have mercy on him) reports that Sayyiduna al-Miqdad bin al-Aswad (may Allah be pleased with him) went out with a detachment. They passed by a man who was with a few sheep and goats of his. They wanted to kill him, so the man recited La ilaha illa Allah (there is none worthy of worship but Allah). Even so, Sayyiduna al-Miqdad (may Allah be pleased with him) killed him. He was asked: "You killed him while he was reciting La ilaha illa Allah?" Sayyiduna al-Miqdad (may Allah be pleased with him) replied that he wanted to flee with his family and his wealth. When these people returned, they mentioned this to the Prophet (peace and blessings be upon him), and this verse was revealed: "O you who believe! When you go out in the way of Allah for jihad, investigate well, and do not say to one who greets you with peace, 'You are not a believer.' Do you seek the goods of the life of this world? (The life of this world here means the flock of sheep and goats.) With Allah there are abundant spoils. You were like this before Islam (that is, you used to conceal your faith from the polytheists), then Allah bestowed His favour upon you (that is, He made Islam prevail), so investigate well. (This is a warning from Allah:) Indeed Allah is fully aware of whatever you do." [An-Nisa: 94]