The four schools of Islamic jurisprudence have different opinions and attitudes towards circumcision: some state that it's recommendable, others that it's permissible but not binding, while others regard it as a legal obligation. According to Shafi‘i and Hanbali jurists both male and female circumcision are legally obligatory for Muslims, while Hanafi jurists consider circumcision to be recommendable exclusively for Muslim males on the seventh day after birth. The Salafi website IslamQA.info, founded by the Saudi Arabian Salafi scholar Muhammad Al-Munajjid, has quoted some "hadith" to argue that the requirement of circumcision in Islam is based on the covenant with Abraham, that male circumcision is obligatory for Muslim men in order to provide ritual cleanliness while the purpose of female circumcision for Muslim women is to "regulate" and reduce their sexual desires.