520 - Muhammad ibn al-Wazir narrated to us, Abdullah ibn Dhuwayd—the freed slave of al-Walid—informed me, from Sulayman ibn Musa, that he heard him say: "If you pray in your house, suffice yourself with the iqamah, and make it in pairs; it shall serve as both adhan and iqamah."
Chapter: A boy performing the adhan while he is not yet of age (baligh).
521 - Muhammad ibn al-Wazir narrated to us, he said: al-Walid narrated to us, he said: Ismail informed me, from Ibn Jurayj: I said to Ata: "May a boy perform the adhan even if he has not experienced puberty?" He said: "Yes."
Chapter: The estimated time between the adhan and the iqamah.
The mu'adhdhin is required to observe who is coming and who is waiting, and whether they have finished what they were commanded to do of prayer, then he performs the iqamah. If he sits in his home to have lunch, he misses what we have described of monitoring, and we do not know of anyone among the Salaf who did that."