Sunan an-Nasa'i, Volume 1, Book 7, Hadith 639 (DarusSalam)

It was narrated from Salim, from his father, that the Prophet said: "Bilal calls the Adhan during the night, so eat and drink until you hear Ibn Umm Maktoom calling the Adhan."

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏ "‏ إِنَّ بِلاَلاً يُؤَذِّنُ بِلَيْلٍ فَكُلُوا وَاشْرَبُوا حَتَّى تَسْمَعُوا تَأْذِينَ ابْنِ أُمِّ مَكْتُومٍ ‏" ‏ ‏.‏

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also referenced under: Book 7, Hadith 645 (In-Book)