47. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from al-Nadr ibn Suwayd from Yahya al- Halabiy from ‘Amr ibn abu al-Miqdam from his father who has said the following:

“Ali ibn al-Husayn , has said, that he was asked about, ‘. . . the apparent and unapparent acts of indecency’ (6:151, 7:33) He (the Imam) said, ‘the apparent one is marriage with the wife of one’s father and the unapparent one is fornication.’”