The Messenger of Allah ﷺ said, "Whoever wears silk in this world will not wear it in the Hereafter."
أن رسول الله ﷺ قال: من لبس الحرير في الدنيا لم يلبسه في الآخرة.
Muslim narrated it in the Book of Clothing and Adornment (2074), from Ibrahim bin Musa Razi, who said, Shuayb bin Ishaq Dimashqi informed us, from Uzai, who said, Shaddad Abu Ammar narrated to me, who said, Abu Umama narrated to me, and he mentioned it.