30. Guard their private parts: Abstain from illicit sexual gratification and from exposing their satar before others. For males, the satar is the part of the body from the navel to the knee, and it is not permissible to expose that part of the body intentionally before anybody except one’s own wife. (Daraqutni, Baihaqi). Jarhad Aslami states that once he was sitting in the company of the Prophet (peace be upon him) with his thigh exposed. The Prophet (peace be upon him) said: Do you not know that the thigh has to be kept concealed. (Tirmizi, Abu Daud, Muatta). AIi reports that the Prophet (peace be upon him) said: Do not expose your thigh. (Abu Daud, Ibn Majah). Not only is the satar to be kept concealed before others but even when alone. The Prophet has warned: Beware, never remain naked, for with you are those (that is, the angels of goodness and mercy), who never leave you alone except when you ease yourself or you go to your wives. So feel shy of them and give them due respect. (Tirmizi). According to another tradition, the Prophet (peace be upon him) said: Guard your satar from everybody except from your wife and your slave-girl. The questioner asked: Even when we are alone? The Prophet (peace be upon him) replied: Yes, even when alone, for Allah has a greater right that you should feel shy of Him. (Abu Daud, Tirmizi, Ibn Majah).