BUKHARI 5829:
from Katab Ilaynā ʿUmar And Naḥn Biʾadhrabījān —
While we were at Adharbijan, ʿUmar wrote to us: 'Messenger of Allah ﷺ forbade wearing silk except this much. Then the Prophet ﷺ approximated his two fingers (index and middle fingers) (to illustrate that) to us.' Zuhair (the sub-narrator) raised up his middle and index fingers.
البخاري ٥٨٢٩:
عن كتب الينا عمر و نحن بءذربيجان —
أَنَّ النَّبِيَّ ﷺ نَهَى عَنْ لُبْسِ الْحَرِيرِ إِلاَّ هَكَذَا وَصَفَّ لَنَا النَّبِيُّ ﷺ إِصْبَعَيْهِ وَرَفَعَ زُهَيْرٌ الْوُسْطَى وَالسَّبَّابَةَ
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