Q: Is circumcision compulsory for men?
A: Circumcision is waajib for men, not faradh. Waajib means necessary. Circumcision is necessary when the boy is still an infant. Once a person becomes an adult, then he does not need to do it.
The difference between faradh and waajib is that the former is proven from stronger proofs than those of the latter. Faradh is emphasized more but both are necessary and important.
Mufti Siraj Desai