حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ عَبْدِ اللَّهِ بْنِ سَوَادَةَ الْقُشَيْرِيِّ، عَنْ أَبِيهِ، قَالَ سَمِعْتُ سَمُرَةَ بْنَ جُنْدُبٍ، يَخْطُبُ وَهُوَ يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ يَمْنَعَنَّ مِنْ سَحُورِكُمْ أَذَانُ بِلاَلٍ وَلاَ بَيَاضُ الأُفُقِ الَّذِي هَكَذَا حَتَّى يَسْتَطِيرَ ‏"‏ ‏.‏

Addressing (the people) Samurah b. Jundub reported the Messenger of Allah (PBUH) as saying: The adhan (call to prayer) of Bilal should not prevent you from taking a meal shortly before dawn, not does the whiteness of horizon (before dawn) in this way (vertically) until it spreads out horizontally. Translation Not Available

Book Ref: Sunan Abi Dawud Book 14 Hadith 2346
Web Ref:  Sunan Abi Dawud Book 13 Hadith 2339