Sunan Ibn Majah
2679
Hasan+2

It was narrated from Salamah bin Rawh bin Zinba', that :his grandfather came to the Prophet (ﷺ) and he had castrated a slave of his. The Prophet (ﷺ) manumitted the slave in compensation for having been mutilated

HasanAl-Albani
Hasan LighairihiMuhammad Fouad Abd al-Baqi