Sunan Ibn Majah, Volume 4, Book 24, Hadith 2820 (DarusSalam) ⓘ

It was narrated from ‘Umar that he used to forbid silk and brocade except that which was like that, then he gestured with his finger, then his second finger, then his third, then his fourth,* and said: “The Messenger of Allah used to forbid that to us.”

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا حَفْصُ بْنُ غِيَاثٍ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنْ أَبِي عُثْمَانَ، عَنْ عُمَرَ، أَنَّهُ كَانَ يَنْهَى عَنِ الْحَرِيرِ، وَالدِّيبَاجِ، إِلاَّ مَا كَانَ هَكَذَا ثُمَّ أَشَارَ بِإِصْبَعِهِ ثُمَّ الثَّانِيَةِ ثُمَّ الثَّالِثَةِ ثُمَّ الرَّابِعَةِ وَقَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَنْهَانَا عَنْهُ ‏.‏