Musnad Ahmad

It is narrated from Hazrat Abu Qatadah (may Allah be pleased with him) that once I saw two men, a Muslim and a polytheist, fighting on the battlefield. Then suddenly I saw a polytheist who was advancing to help his polytheist companion against the Muslim. I reached him and struck his hand, which cut off his hand. He grabbed my neck with his other hand, and by Allah! He did not let me go until I felt the knock of death, and if his blood had not flowed so much, he would have killed me. Anyway, he fell, and I killed him, and I myself became exhausted. Meanwhile, a man from the people of Makkah passed by him and took all his equipment and left. When we were done and the flames of battle had subsided, the Noble Prophet (peace and blessings be upon him) said that whoever has killed a disbeliever, his equipment belongs to him. Upon this, I said, O Messenger of Allah! I killed a man who had a lot of equipment, but after killing him I became so exhausted that I did not know who took his equipment. A man, who was from the people of Makkah, said, O Messenger of Allah! He is telling the truth, I took his equipment, so please give him something else from me regarding his equipment (and let this equipment remain with me). Upon hearing this, Hazrat Abu Bakr Siddiq (may Allah be pleased with him) said, Do you want to distribute the equipment of a lion among the lions of Allah, "who fights in the way of Allah"? Return his equipment to him. The Noble Prophet (peace and blessings be upon him) said, Abu Bakr has spoken the truth, return the equipment of his slain to him. So I took it and sold it, and with its price I bought a garden in Madinah Munawwarah, which was the first wealth I had ever bought.