"...If the party liable is mentally deficient, or weak, or unable Himself to dictate, Let his guardian dictate faithfully, and get two witnesses, out of your own men, and if there are not two men, then a man and two women, such as ye choose, for witnesses, so that if one of them errs, the other can remind her. The witnesses should not refuse when they are called on (For evidence)." - Quran 2:282 (read more)

"....The women asked, "O Allah's Apostle! What is deficient in our intelligence and religion?" He said, "Is not the evidence of two women equal to the witness of one man?" They replied in the affirmative. He said, "This is the deficiency in her intelligence. Isn't it true that a woman can neither pray nor fast during her menses?" The women replied in the affirmative. He said, "This is the deficiency in her religion." - Sahih Bukhari 1:6:301 (read more)

"...it is clear that the circumcision of girls – which is the topic under discussion here – is part of the fitrah of Islam, and the way it is to be done is the method that the Messenger of Allaah (peace and blessings of Allaah be upon him) explained. It is not right to abandon his teachings for the view of anyone else, even if that is a doctor, because medicine is knowledge and knowledge is always developing and changing." - Shaykh Jaad al-Haqq ‘Ali Jaad al-Haqq