If one hears a non-baligh child reciting an ayat of sajdah, will it make sajdah compulsary upon him?
Answer:
In the Name of Allah, the Most Gracious, the Most Merciful.
If an adult hears a non-baligh child reciting an ayah of sajda, sajda tilawah will become compulsory on the adult if the child has reached an age of understanding (i.e. he can differentiate the right from the wrong). If, on the other hand, the child has not reached an age of understanding i.e. he is very small, sajdah tilawah will not be compulsory on the adult.
(Ahsanul Fatawa: 4/60,62)
And Allah knows best.
Mufti Faizal Riza
23/9/2011