Sunan an-Nasa'i 5295

It was narrated from 'Umar bin Al-Khattab that:He saw a Hullah of Sira' silk being offered for sale at the door of the Masjid. I said: "O Messenger of Allah, why don't you buy this and wear it on Fridays, and (when meeting) the delegations when they come to you?" The Messenger of Allah [SAW] said: "This is only worn by one who has no share in the Hereafter." After that some (other) Hullahs were brought to the Messenger of Allah [SAW] and he gave me one. He said: "O Messenger of Allah, you gave me this when you said what you said about it!" The Prophet [SAW] said: "I did not give it to you to wear it! Rather I gave it to you to give away or to sell." So 'Umar gave it to a brother of his son on his mother's side who was an idolater