محمد بن يحيى، عن أحمد بن محمد بن عيسى، عن أبي يحيى الواسطي، عن بعض أصحابنا، عن أبي الحسن الماضي عليه السلام قال: العورة عورتان القبل والدبر، فأما الدبر مستور بالاليتين فإذا سترت القضيب والبيضتين فقد سترت العورة.
26. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from abu Yahya al-Wasitiy from certain persons of our people who has said the following: “Abu al-Hassan, al-Madiy , has said, ‘Private parts are two: the front and back. The back is covered with the rump. If you cover the penis and testicles you have covered your private parts.’” In another Hadith it is said, ‘The back is covered with the rump. You can cover the front with your hand.’ 