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.
أَخْبَرَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ بْنُ نُمَيْرٍ، قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنْ عُمَرَ بْنِ الْخَطَّابِ، أَنَّهُ رَأَى حُلَّةَ سِيَرَاءَ تُبَاعُ عِنْدَ بَابِ الْمَسْجِدِ فَقُلْتُ يَا رَسُولَ اللَّهِ لَوِ اشْتَرَيْتَ هَذَا لِيَوْمِ الْجُمُعَةِ وَلِلْوَفْدِ إِذَا قَدِمُوا عَلَيْكَ ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ إِنَّمَا يَلْبَسُ هَذِهِ مَنْ لاَ خَلاَقَ لَهُ فِي الآخِرَةِ ‏"‏ ‏.‏ قَالَ فَأُتِيَ رَسُولُ اللَّهِ صلى الله عليه وسلم بَعْدُ مِنْهَا بِحُلَلٍ فَكَسَانِي مِنْهَا حُلَّةً فَقَالَ يَا رَسُولَ اللَّهِ كَسَوْتَنِيهَا وَقَدْ قُلْتَ فِيهَا مَا قُلْتَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ لَمْ أَكْسُكَهَا لِتَلْبَسَهَا إِنَّمَا كَسَوْتُكَهَا لِتَكْسُوهَا أَوْ لِتَبِيعَهَا ‏"‏ ‏.‏ فَكَسَاهَا عُمَرُ أَخًا لَهُ مِنْ أُمِّهِ مُشْرِكًا ‏.‏