"Until, when he reached the setting of the sun, he found it set in a spring of murky water: Near it he found a People: We said: “O Zul-qarnain! (thou hast authority,) either to punish them, or to treat them with kindness." - Quran 18:86 (read more)

"Narrated Qatada: Anas bin Malik said, "The Prophet used to visit all his wives in a round, during the day and night and they were eleven in number." I asked Anas, "Had the Prophet the strength for it?" Anas replied, "We used to say that the Prophet was given the strength of thirty (men)." And Sa'id said on the authority of Qatada that Anas had told him about nine wives only (not eleven)." - Sahih Bukhari 1:5:268 (read more)

"Hence the fuqaha’ of all madhhabs are agreed that circumcision for both men and woman is part of the fitrah of Islam and one of the symbols of the faith, and it is something praiseworthy. There is no report from any of the Muslim fuqaha’, according to what we have studied in their books that are available to us, to say that circumcision is forbidden for men or women, or that it is not permissible, or that it is harmful for females, if it is done in the manner that the Prophet (peace and blessings of Allaah be upon him) taught..." - Shaykh Jaad al-Haqq ‘Ali Jaad al-Haqq