11. Ahmad ibn Muhammad has narrated from those whom he has mentioned from al-Husayn ibn Bishr who has said the following
“I once asked al-Rida’ (a.s.), about the case of a man who had a slave-girl who had a daughter. He falls on her (for sexual intercourse); if he could fall on her daughter. He (the Imam) said, ‘Does a man of good deeds marry his own daughter?”’