Hadith 2530
It is narrated from Sayyiduna Anas bin Malik, may Allah be pleased with him, that the king of Dhu Yazan bought a robe for the Prophet Muhammad, peace and blessings be upon him, in exchange for 33 camels or 33 she-camels and sent it as a gift, which the Prophet, peace and blessings be upon him, accepted.
Hadith 2531
Sayyiduna Abu Humayd Sa'idi (may Allah be pleased with him) said: The ruler of Aylah sent a letter to the Messenger of Allah (peace and blessings be upon him) and sent a gift of a white mule. The Messenger of Allah (peace and blessings be upon him) also wrote him a letter in reply and sent a cloak as a gift.