Sheikh Yusuf Al-Qaradawi, states: “If the penis is too short to the extent that it renders man unable to have sexual intercourse with his wife, then one can consult medical experts to determine the proper treatment. But if having sex is possible though not satisfactory, penile enlargement operation is not allowed, for that falls in forbidden acts of tampering with Allah’s Creation.
Undergoing this operation is not permissible save in necessary cases, based on the following Qur’anic verse referring to the words of Satan: “And surely I will command them and they will change Allah’s creation. Whoso chooseth Satan for a patron instead of Allah is verily a loser and his loss is manifest.” (An-Nisa’: 119)
On his part, the eminent Muslim scholar, Sheikh `Abdus-Sattar F. Sa`eed, Professor of the Exegesis of the Qur’an at Al-Azhar Univ., adds: “If the penis is abnormally short to the extent that it causes harm to the person and makes him unable to function naturally, then it becomes allowable to undergo an operation for the enlargement of his penis. This is considered to be a state of necessity where the person is allowed to do so.
However, if the organ is in its natural size and the person wants to enlarge it just out of personal desire for having more sexual gratification, it becomes Haram (unlawful) to do so for two reasons:
1- This involves uncovering the `Awrah (parts of one’s body that should not be exposed in front of others) for non-medical purposes, and
2- It involves changing Allah’s Creation without necessity.”