❖ Source:
Fatāwā Amunpuri by Shaykh Ghulam Mustafa Zaheer Amunpuri
❖ Question:
If someone has been breastfed by his maternal grandmother (nānī), is it permissible for him to marry his maternal aunt’s daughter (khālah’s daughter)?
✿ Answer:
No, such a marriage is not permissible.
The man and the maternal aunt’s daughter become milk-uncle and milk-niece (raḍāʿī māmū-bhānjī) to each other.
Just as a biological maternal uncle cannot marry his niece, likewise, a milk-uncle cannot marry his milk-niece.
This is because in Islamic jurisprudence:
“Whatever relationship is prohibited due to lineage (nasab) is also prohibited due to breastfeeding (raḍāʿah).”
❖ Quranic Evidence:
وَبَنَاتُ الْأُخْتِ
﴿النساء: 23﴾
Translation:
“And (prohibited to you are) the daughters of your sisters…”
[Surah An-Nisā’: 23]
This includes both biological and milk-nieces.
✅ Summary:
- A man who has drunk his nānī’s milk becomes a milk-brother to her children, including his khālah.
- As a result, the khālah’s daughter becomes his milk-niece, making nikāḥ with her forbidden.
- Milk relations carry the same marriage prohibitions as blood relations.
