سنن أبي داود

'Abd al-Rahman b. Muhariz said:

We asked Fadalah b. 'Ubaid about the hanging the (amputated) hand on the neck of a thief whether it was a sunnan. He said: A thief was brought to the Messenger of Allah (ﷺ) and his hand was cut off. Thereafter he commanded for it, and it was hung on his neck.