بسم الله الرحمن الرحيم
(Fatwa: 1486/1486/M=01/1436)
If you want to perform Hajj on behalf of your mother with your sole consent whereas it is not fardh or your mother has not made a will for the same then also you may do it. It shall be a nafl Hajj and your mother shall get reward of a nafl Hajj.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
