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Question: What are the rulings on circumcision for males in the maliki madhhab?
If an adult male was to become Muslim then is it wajib for him to get circumcised?
Answer: If a person wants to become Muslim, they do not have to be circumcised first. A person believing in Islam should pronounce his faith without any delay.
According to the Maliki madhab, the circumcision of a male is a highly recommended act (sunna). It is not an obligation (wajib). The ruling is the same whether the male is a child or an adult. [Risala of Ibn Abi Zayd]