The Messenger of Allah ﷺ forbade silk, gold, and saddle covers made from leopard skins.
نهى رسول الله ﷺ عن الحرير، والذهب، ومياثر النمور.
Nasai narrated it in Al-Sughra (4265), in Al-Kubra (4566), and Ahmad (17185), by way of Baqiyyah, from Buhayr (that is Ibn Saad), from Khalid bin Madan, from Miqdam bin Mad Yakrib. Its chain is hasan because of Baqiyyah, that is Ibn Walid, whose use of "an" (indicating an undetermined link) has been accepted unconditionally when he narrates from Buhayr bin Saad, so how much more so when he states it explicitly. This is what Ibn Abdul-Hadi said. See his commentary on Al-Ilal by Ibn Abu Hatim (p. 157).