Answer:
(Fatwa: 1438/1155=L=1430)
After maturity, a boy becomes independent, thus a son who does not have resources will not be considered rich if his father is wealthy. You can give him Zakah if he deserves to receive it.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
