question #2 Sahih al-Bukhari 1918, 1919, Book 30, Hadith 28 : How does the role of different individuals in pronouncing the Adhan affect the daily practices of Muslims?

Bilal used to pronounce the Adhan at night, so Allah’s Messenger (ﷺ)? said, “Carry on taking your meals (eat
and drink) till Ibn Um Maktum pronounces the Adhan, for he does not pronounce it till it is dawn.