“I asked Fadalah bin Ubaid about hanging the hand (of the thief) from this neck, and he said: 'It is sunnah. The messenger of Allah ﷺ cut off a man's hand then hung it from his neck'''  

السُّنَّةُ قَطَعَ رَسُولُ اللَّهِ ﷺ يَدَ رَجُلٍ ثُمَّ عَلَّقَهَا فِي عُنُقِهِ