It is permissible for your blood brother to marry your foster sister
Machine translationRead the Arabic original
The questioner:
May Allah reward you with good, and may He do you good. He asks and says: Is it permissible for one of my brothers to marry a girl who is my foster sister?
The Shaykh:
It is not permissible for you to marry a girl who is your foster sister, because when Allah (Mighty and Majestic) mentioned the prohibited relatives, He said:[An-Nisa 4:23], and the Prophet (peace and blessings be upon him) said: Sunan Ibn Majah 1937Sahih (Darussalam). Yes.
The questioner:
As for my brothers, may Allah keep you safe.
The Shaykh:
As for your brothers who have no foster relationship with this girl, there is no objection to their marrying her. Even if she is your foster sister, it is permissible for your blood brother to marry your foster sister. Yes.
May Allah reward you with good, and may He do you good. He asks and says: Is it permissible for one of my brothers to marry a girl who is my foster sister?
The Shaykh:
It is not permissible for you to marry a girl who is your foster sister, because when Allah (Mighty and Majestic) mentioned the prohibited relatives, He said:
your sisters through nursing
وَأَخَوَاتُكُم مِّنَ الرَّضَاعَةِBreast-feeding makes unlawful (for marriages) the same things that blood tie make unlawful.
يحرم من الرضاع ما يحرم من النسبThe questioner:
As for my brothers, may Allah keep you safe.
The Shaykh:
As for your brothers who have no foster relationship with this girl, there is no objection to their marrying her. Even if she is your foster sister, it is permissible for your blood brother to marry your foster sister. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، 4648- يجوز لأخيك من النسب أن يتزوج أختك من الرضاعة - الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.