Muhammad ﷺ said, "Whoever wears silk in this world will not wear it in the Hereafter."
قال محمد ﷺ: من لبس الحرير في الدنيا لم يلبسه في الآخرة.
Bukhari (5833) narrated it from Sulayman bin Harb, who said, Hammad bin Zayd narrated to us, from Thabit, who said, I heard Ibn Zubayr delivering a sermon saying, then he mentioned it. It appears that he heard it from Umar bin Khattab .His saying, "he will not wear it in the Hereafter," is a metaphor for his not entering Paradise at the outset, since Allah Almighty says, "and their garments therein will be silk" [Hajj 22:23].