some people says that fixed deposite intrest money can be used in purpose like building toilet bathroom and cleaning of nail and garbeg (kura)around are home .
Answer
(Fatwa: 421/217/D=1432)
Some Ulama have allowed using interest of fixed deposit for building toilet and other public welfare works, but the preferable opinion according to us is that it is not lawful to spend it in the said heads rather it is necessary to give it in charity to the poor and needy ones without the intention of reward.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband