Please clarify whether two real unmarried sisters can be given in nikah to one person?
بسم الله الرحمن الرحيم
(Fatwa: 45/45/M=01/1436)
It is unlawful and haram to combine two real sisters in wedlock. It has been mentioned in surah Nisa. If you do not combine them i.e. first you married one sister and later you gave her talaq due to some reason and then after her iddah was over you married her real sister then it is lawful.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband