Sunan Ibn Majah, Volume 4, Book 32, Hadith 3620 (DarusSalam) ⓘ
It was narrated from Ibn Buraidah, from his father, that an-Najashi sent a pair of pure black Khuff as a gift to the Prophet of, which he wore.
حَدَّثَنَا أَبُو بَكْرٍ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا دَلْهَمُ بْنُ صَالِحٍ الْكِنْدِيُّ، عَنْ حُجَيْرِ بْنِ عَبْدِ اللَّهِ الْكِنْدِيِّ، عَنِ ابْنِ بُرَيْدَةَ، عَنْ أَبِيهِ، أَنَّ النَّجَاشِيَّ، أَهْدَى لِرَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ خُفَّيْنِ سَاذَجَيْنِ أَسْوَدَيْنِ فَلَبِسَهُمَا .
also referenced under: Hadith 3620 (Reference) & Book 32, Hadith 3751 (In-Book)