Source: Fatāwā Amunpuri by Shaykh Ghulam Mustafa Zaheer Amunpuri
❖ Question:
What is the ruling on marrying the granddaughter of a paternal half-brother (ʿalātī brother)?
✿ Answer:
Such a marriage is prohibited and falls under the category of ḥarām (forbidden) relationships.
❀ Qur’anic Evidence:
وَبَنَاتُ ٱلْأَخِ
“And the daughters of your brother (are forbidden to you in marriage).”
📖 Sūrah al-Nisāʾ: 23
This prohibition applies to all types of brothers — whether they are:
① Full brothers (ḥaqīqī)
② Paternal half-brothers (ʿalātī)
③ Maternal half-brothers (akhiyāfī)
Moreover, the descendants of these daughters, including granddaughters, are also included in this prohibition.
Thus, just as it is impermissible to marry the daughter of a paternal half-brother, it is likewise ḥarām to marry his granddaughter.
✅ Key Ruling:
The granddaughter of an ʿalātī (paternal half) brother is a maḥram (permanently unmarriageable relative), and marrying her is not allowed under any circumstances.
