He used to forbid silk and brocade except for what was like this, then he pointed with one finger, then a second, then a third, then a fourth, and said, "The Messenger of Allah ﷺ used to forbid it to us."
حدثنا أبو بكر بن أبي شيبة حدثنا حفص بن غياث عن عاصم الأحول عن أبي عثمان
أنه كان ينهى عن الحرير والديباج إلا ما كان هكذا ثم أشار بإصبعه ثم الثانية ثم الثالثة ثم الرابعة وقال كان رسول الله ﷺ ينهانا عنه
Bukhari narrated it in the Book of Clothing, the chapter on men wearing silk and how much of it is permissible, hadith 5829, from the hadith of Asim, through him. Muslim also narrated it in the Book of Clothing, in the preceding chapter, hadith 13/2069, from the hadith of Hafs bin Ghiyath, through him.