Answered by: Maulana Tahsin Alam
Assalamu Alaikum Wa Rahmatullah!
If the woman who says the ijaab, does not hear the man saying the qubool, is marriage valid? For example, if a woman is saying the ijaab of marriage loud in her room.
Now three men hear this from the next room or the next flat and one of the man says qubool in front of the other two men. But the woman does not hear the man saying the qubool. Will, that make a marriage between the man and the woman?
بِسْمِ اللهِ الرَّحْمنِ الرَّحِيْم
In the name of Allah, the Most Gracious, the Most Merciful.
Assalamu Alaikum Wa Rahmatullahi Wa Barakaatuh,
The husband and wife must be able to hear the ījāb and qubūl for the validity of a nikāh, otherwise, it is not valid.
Only Allah Ta’ala knows best
Written by Maulana Tahsin Alam
Checked and approved by Ustadha Sabrina al-Faarsiyyah
Darul Ifta Birmingham
 Ibn Nujaym, Bahr al-Rāiq, Vol.3 Page 148.
This answer was collected from DarulIftaBirmingham.co.uk, which is run under the supervision of Mufti Mohammed Tosir Miah from the United Kingdom.