"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). (Using translation from Nasāʾī 4754)
أَنَّ النَّبِيَّ ﷺ قَالَ «مَنْ أَخْصَى عَبْدَهُ أَخْصَيْنَاهُ وَمَنْ جَدَعَ عَبْدَهُ جَدَعْنَاهُ» وَاللَّفْظُ لِابْنِ بَشَّارٍ