It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Among the Prophets, there was a Prophet who fought in jihad, and he said to his people: No man should come with me who has become the owner of a woman's private part and intends to have privacy with her, while he has not yet had privacy; nor should a man come with me who has built a building but has not yet put a roof on it; nor should a person come who has bought goats or pregnant animals and is waiting for them to give birth. So that Prophet set out for jihad and reached near a town; it was the time of Asr prayer or close to it. He said to the sun: You are also bound by Allah's command, and I am also bound by His command. O Allah! Hold back this sun for a while. So it was held back for him until Allah granted them victory, and they collected the spoils of war. A fire came to consume it, but it refused to eat it. Seeing this, that Prophet said: There is treachery among you people. So, let one man from each tribe pledge allegiance to me. They pledged allegiance, and the hand of one man stuck to his hand. The Prophet said: There is treachery among you people, so let your whole tribe pledge allegiance to me. The entire tribe pledged allegiance, and the hands of two or three men stuck. He said: There is treachery among you individuals; you have committed treachery. So they brought out gold, which was like the head of a cow, and placed it among the spoils, which were lying on the ground. Then the fire came and consumed it. Then the Messenger of Allah (peace and blessings be upon him) said: These spoils were not lawful for anyone before us. So, seeing our weakness and humility, Allah made them lawful for us.