Answer:
(Fatwa: 331/H242/H=1432)
(1) It is haram (prohibited) to open saving account with this intention.
(2) It is haram to use interest therein.
(3) It is not lawful. Rather the interest amount should be given 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
