Narrated The freed slave of Asma:
from Ibn 'Umar who said: "I heard 'Umar mentioning that the Prophet (ﷺ) said: 'Whoever wears silk in the world he shall not wear it in the Hereafter.'" (JA)
English reference (JA): Vol. 5, Book 41, Hadith 2817 (JA)
Arabic reference (JA): Book 43, Hadith 3049 (JA)