Sunan an-Nasa'i 4754
سنن النسائي#4754Da'ifأَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، وَمُحَمَّدُ بْنُ بَشَّارٍ، قَالاَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ، أَنَّ نَبِيَّ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ خَصَى عَبْدَهُ خَصَيْنَاهُ وَمَنْ جَدَعَ عَبْدَهُ جَدَعْنَاهُ " . وَاللَّفْظُ لاِبْنِ بَشَّارٍ .
It was narrated from Samurah that the Prophet of Allah said:"Whoever castrates his slave, we will castrate him, and whoever mutilates his slave, we will mutilate him." This is the wording of Ibn Bashshar (one of the narrators)
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:
In-book reference: 45:49