Answered by Shaykh Rami Nsour
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?
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]