قال الشيخ أيده الله تعالى ومن أراد الغائط فليرتد موضعا يستتر فيه عن الناس بالحاجة وليغط رأسه إن كان مكشوفا ليأمن بذلك من عبث الشيطان ومن وصول الرايحة الخبيثة إلى دماغه وهو سنة من سنن النبي صلى الله عليه وآله وفيه اظهار الحياء من الله تعالى لكثرة نعمه على العبد وقلة الشكر منه فهذه اداب يستحب أن يستعملها الانسان وإن لم يعملها فليس بمأثوم
The Shaykh (Al-Mufid), may Allah (swt) support him, said: "Whoever intends to relieve themselves should choose a place where they are concealed from people due to their need and should cover their head if it is uncovered. This is to protect oneself from the mischief of Satan and from the foul odor reaching the brain. This is a Sunnah of the Prophet (saws), may Allah (swt) bless him and his family, and it demonstrates modesty before Allah (swt), the Exalted, in recognition of His (swt) numerous blessings upon the servant and the servant's lack of gratitude for them." These are etiquettes that it is recommended for a person to observe. However, if one does not observe them, there is no sin upon them.