Sunan an-Nasa'i 4949
سنن النسائي#4949Da'ifأَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ عَطَاءٍ، وَمُجَاهِدٍ، عَنْ أَيْمَنَ، قَالَ لاَ يُقْطَعُ السَّارِقُ فِي أَقَلَّ مِنْ ثَمَنِ الْمِجَنِّ .
It was narrated that Ayman said:"The (hand of) a thief is not to be cut off for less than the price of a shield." (Daif Mawquf)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahDaif
Al-AlbaniDaif
Zubair Ali ZaiIsnaad Hasan
In-book reference: 46:79