Answer:
(Fatwa: 1966/1567=H/1429)
(1) When you are sure, then it is unlawful to take gift from the salary.
(2) You should say: the major part of your salary is based on interest and receiving such money for mosque is unlawful; therefore we are sorry for that.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
