It wasnarrated from 'Umar that he used to forbid silk and brocade,exceptfor what was like this:
Then he gestured with his finger, thenasecond, and a third, and a fourth (i.e., the width of four fingers),and he said: "The Messenger of Allah (ﷺ) used to forbid it."
English reference: Vol. 4, Book 32, Hadith 3593
Arabic reference: Book 32, Hadith 3724