"(We also sent) Lut (as a messenger): behold, He said to his people, "Do ye do what is shameful though ye see (its iniquity)? Would ye really approach men in your lusts rather than women? Nay, ye are a people (grossly) ignorant! But his people gave no other answer but this: they said, "Drive out the followers of Lut from your city: these are indeed men who want to be clean and pure!" Then We saved him and his household save his wife; We destined her to be of those who stayed behind. And We rained down on them a shower (of brimstone): and evil was the shower on those who were admonished (but heeded not)! - Quran 27:54 (read more)

"Narated By Abdullah ibn Abbas : The Prophet (pbuh) said: If you find anyone doing as Lot's people did, kill the one who does it, and the one to whom it is done." - Tirmidhi 1457 (read more)

"With regard to the criticism of [female] circumcision by some doctors, and their claim that it is harmful both physically and psychologically. This criticism of theirs is not valid. It is sufficient for us Muslims that something be proven to be from the Prophet (peace and blessings of Allaah be upon him), then we will follow it,... If it were harmful, Allaah and His Messenger (peace and blessings of Allaah be upon him) would not have prescribed it for us." - Islam Q&A