❖ Shariah Ruling on Marrying One’s Daughter to Her Maternal Uncle’s Son ❖
Answered by: Fadīlat al-Shaykh ʿAbd al-Wakīl Nāṣir Ḥafiẓahullāh & Fadīlat al-ʿĀlim ʿUmar Atharī Ḥafiẓahullāh
❀ Question:
A man wishes to marry his daughter to his real maternal uncle’s son (i.e., her cousin). Is this permissible in Islam?
✔ Answer:
From a Sharʿī perspective, there is no prohibition or objection to this marriage.
Marriage between first cousins, including maternal uncle’s son, is permissible and has no inherent legal flaw.
✿ Important Exception:
However, if the boy and girl are related through riḍāʿah (fosterage)—
i.e., if they were breastfed by the same woman, making them foster siblings (رضاعی بہن بھائی)—
then such a marriage would be impermissible, as Islam forbids marriage between foster siblings just as it forbids it between biological siblings.
✔ Summary:
➤ Marriage to a maternal uncle’s son is permissible.
➤ Ensure there is no foster (riḍāʿah) relationship between the two.
➤ If foster ties exist, nikāḥ is invalid.
