Prophet peace be upon him has instructed muslim men to be circumsized so they remain clean while performing numaz so its a sunnah. We as muslims follow the prophet end of debate here.
Circumcision is not mentioned in the
Qur'an but it is highlighted in the
Sunnah.In the Sunnah, Muhammad stated that circumcision was a "law for men."
The main reason given for the ritual is cleanliness. It is essential that every Muslim washes before praying. It is important that no urine is left on the body.
Muslims believe the removal of the foreksin makes it easier to keep the penis clean because urine can't get trapped there.
Supporters of circumcision also argue that excrements may collect under the foreskin which may lead to fatal diseases such as cancer.
Some Muslims see circumcision as a preventive measure against infection and diseases.