The ruling on shaking hands with a foster sister
Machine translationRead the Arabic original
Question:
This questioner asks: Is it permissible to shake hands with my foster sister? And am I a mahram (a relative one may not marry) to her?
Answer:
Yes. There is nothing wrong with shaking her hand, and you are a mahram to her if the breastfeeding meets the conditions for prohibition. The breastfeeding must have occurred within the first two years, and it must have been five full sucklings or more. If so, she becomes your sister through breastfeeding, and you are a mahram to her. You may shake her hand just as you would your sisters by blood. Yes.
This questioner asks: Is it permissible to shake hands with my foster sister? And am I a mahram (a relative one may not marry) to her?
Answer:
Yes. There is nothing wrong with shaking her hand, and you are a mahram to her if the breastfeeding meets the conditions for prohibition. The breastfeeding must have occurred within the first two years, and it must have been five full sucklings or more. If so, she becomes your sister through breastfeeding, and you are a mahram to her. You may shake her hand just as you would your sisters by blood. Yes.
Source
قناة «العلامة الدكتور صالح الفوزان»، ما حكم مصافحة الأخت من الرضاعة؟ وهل هي من المحارم؟ #فتاوى الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.