In Islam is castration permitted? If not then weren’t a great number of slaves castrated by muslims in the past? Also, is masturbation permissible according to any current Marja or early scholar? May 5, 2023 by Hasan mahdi 1- No castration is not permissible. It’s unjust and a sin. If some Muslims did it in the past, they were violating Islamic law. 2- Masturbation is not permissible and all scholars are in agreement. Sayed Mohammad Baqer Qazwini englishYouth