Answer:
(Fatwa: 1236/971/D=1431)
You should do isal-o-sawab for your mother extensively. Try to please her soul by reciting the holy Quran, doing charity and sadqah. Also, treat her successors with good manner and keep on reciting this dua:
رب ارحمهما كما ربيانى صغيراً.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
