بسم الله الرحمن الرحيم
(Fatwa: 339/339/SD=05/1437)
There is no age limitation for starting Hifz course. When the child completes nazirah and is able to pronounce the words correctly then he may start Hifz with the advice of the concerned teacher.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
