Musnad Abu Ya'la al-Mawsili 117:144

Al-Hasan ibn Hammad al-Kufi narrated to us, Ishaq ibn Mansur al-Saluli narrated to us, from 'Umarah ibn Zadhan, from Thabit, from Anas ibn Malik: That the King of Dhu Yazan gifted to the Messenger of Allah, may Allah bless him and grant him peace, a garment that was purchased for thirty-three camels.