´It was narrated that 'Abdur-Rahman bin Muhairiz said:` "I said to Fadalah bin 'Ubaid: 'Do you think that hanging the hand from the thief's neck is Sunnah?' He said: 'Yes; a thief was brought to the Messenger of Allah and he cut off his hand and hung it from his neck."' (Daif) Abu 'Abdur-Rahman (An-Nasai) said; Al-Hajjaj bin Artah is weak, his narrations are not used as proof.
Hadith Referenceسنن نسائي / كتاب قطع السارق / 4986
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف، إسناده ضعيف، ابو داود (4411) وانظر الحدي السابق (4985) انوار الصحيفه، صفحه نمبر 359
´'Abdur-Rahman bin Muhariz said:` "I asked Fadalah bin 'Ubaid about hanging the hand around the neck of the thief: 'Is this from the Sunnah?' He said: 'A man came to the Messenger of Allah (ﷺ) with a thief so his hand was cut off, and then he ordered that it be hung around his neck.'"
Shaykh Dr. Abdur Rahman Freywai
Commentary: Note: (In the chain, "Hajjaj bin Arta’ah" is weak, and "Abdur Rahman bin Muhairiz" is unknown.) See: al-Irwa: 2432.
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 1447