The Prophet (ﷺ) said, "Bilal pronounces the Adhan at night so that you may eat and drink till Ibn Um Maktum pronounces the Adhan (for the Fajr prayer).
Sahih al-Bukhari Book 95, Hadith 3
← Previous Hadith Allah's Messenger (ﷺ) said, "The (call for prayer) Adhan of Bilal should not stop anyone of you from taking his Suhur for he pronounces the Adhan in order that whoever among you is praying the night prayer, may return (to eat his Suhur) and whoever among you is sleeping, may get up, for it is not yet dawn (when it is like this)." (Yahya, the sub-narrator stretched his two index fingers side ways).

Sahih al-Bukhari Book 95, Hadith 2 Next Hadith → The Prophet (ﷺ) led us in Zuhr prayer and prayer five rak`at. Somebody asked him whether the prayer had been increased." He (the Prophet (ﷺ) ) said, "And what is that?" They (the people) replied, "You have prayed five rak`at." Then the Prophet (ﷺ) offered two prostrations (of Sahu) after he had finished his prayer with the Taslim.

Sahih al-Bukhari Book 95, Hadith 4