Answer:
(Fatwa: 549/549/M=1432)
Your younger brother may go for hajj with your parents. If he is not having that much money, but when the parents will give him his hajj expenses or they will take him with their expenses and he would offer his own fardh hajj, then his hajj would also be valid. And later on when he will start earning and become rich, he will not be required to perform hajj again.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
