It wasnarrated from Ibn Buraidah, from his father, that an-Najashisent apair of pure black Khuff as a gift to the Prophet (ﷺ) of,which hewore. (JA)
English reference (JA): Vol. 4, Book 32, Hadith 3620 (JA)
Arabic reference (JA): Book 32, Hadith 3751 (JA)