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.'"
Jami` at-Tirmidhi Book 43, Hadith 91
← Previous Hadith "The Prophet (ﷺ) saw a man wearing Khuluq and said: 'Go and wash it, then wash it, then do not use it again.'"

Jami` at-Tirmidhi Book 43, Hadith 90 Next Hadith → "The Messenger of Allah (ﷺ) distributed some cloaks but he did not give anything to Makhramah. Makhramah said: 'O my son! Let us go to the Messenger of Allah (ﷺ).' So I went with him. He said: 'Enter and call him for me.'So I called the Prophet (ﷺ) for him, then the Prophet (ﷺ) came out wearing one of the cloaks. He (ﷺ) said: 'I kept this one for you.'" He said: "So he looked at him and said: 'Makhramah is pleased.'"

Jami` at-Tirmidhi Book 43, Hadith 92