Hazrat Ibn Sirin (may Allah have mercy on him) narrates that Hazrat Abu Musa (may Allah have mercy on him) wrote a letter to Hazrat Umar (may Allah be pleased with him) inquiring about the eighteen coats of armor that had come into his possession. So Hazrat Umar (may Allah be pleased with him) replied to him: Give these coats of armor to the people of the bravest tribe among the Arabs. The narrator states: He (may Allah be pleased with him) bestowed these coats of armor upon Banu Riyah, which is a branch of Banu Tamim.