Because of Marriage People Who Become Unlawful to Marry

6. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan ibn Yahya from ibn Muskan from al-Hassan ibn Ziyad from Muhammad ibn Muslim who has said the following: “This is concerning my question before abu ‘Abd Allah عليه السلام, about the case of a man who has married a woman and has touched her. He (the Imam) عليه السلام, said, ‘She is unlawful to his father and her mahr (dower) is obligatory.’”