Answer:
(Fatwa: 1876/L=560-TL=1432)
In itself there is no harm in building mosque adjacent to the Church. However, it is the matter of observation whether it is appropriate or not to build a mosque there and whether building mosque will be harmful there or not. The people of the area should themselves consider about it.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
