The Book of Fasting (Kitab Al-Sawm)

Muslim :: Book 6 : Hadith 2400

Abdullah b. 'Umar (Allah be pleased with both of them) reported: I heard the Messenger of Allah (may peace be upon him) as saying: Bilal announces Adhan during the night, so you eat and drink, till you hear the Adhan of Ibn Umm Maktum.