Musannaf Ibn Abi Shaybah

Ibrahim narrates that Hazrat Alqamah and Hazrat Abdur Rahman bin Abi Laila went towards their village. Ibrahim says that he liked the idea that Hazrat Abdur Rahman bin Abi Laila would instruct his younger son to give the call to prayer (adhan).

Hazrat Ata says that a boy can give the adhan before reaching puberty.

Hazrat Sha'bi says that if a boy can give the adhan properly, then he can give the adhan before reaching puberty.