It was narrated that 'Aishah said:
"The Messenger of Allah (ﷺ) said: 'Bilal calls the Adhan during the night, so eat and drink until Ibn Umm Maktum calls the Adhan." She said: "And there was no more between then than the time it takes for one to come down and the other to go up."
English reference: Vol. 1, Book 7, Hadith 640
Arabic reference: Book 7, Hadith 646