بسم الله الرحمن الرحيم
(Fatwa: 301/250/L=3/1441)
It is lawful to do zikr loudly in the mosque or in the outer portion of the mosque. However, doing zikr loudly in a way that causes disturbance for others is not correct. Such person should select such a place in the mosque where others are not disturbed if he does zikr.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
