It is narrated from Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was on a journey and asked: "Who will keep watch over us tonight so that we do not sleep through the Fajr prayer?" Sayyiduna Bilal (may Allah be pleased with him) said: "I will take this duty." Then he sat facing the direction of sunrise, and a deep sleep was cast over all of them, until nothing woke them except the heat of the sun. Then they all got up and hurriedly performed ablution, Sayyiduna Bilal (may Allah be pleased with him) gave the call to prayer (adhan), and they all first prayed the two (sunnah) rak'ahs (of Fajr) and after that prayed the (obligatory) Fajr prayer.
Hadith Referenceمسند أبي يعلى الموصلي / حديث جبير بن مطعم، عن النبي صلى الله عليه وسلم / 7410
Hadith Gradingمحدثین:إسناده صحيح
Hadith Takhrij«حکم الحدیث مسند ابی یعلی محققاً تنسیق حسين سليم أسد - مکتبہ شاملہ :قال حسين سليم أسد: إسناده صحيح . » «قال سعيد بن محمد السناري: صحيح» «أخرجه سنن النسائي برقم: 624، وأخرجه مسند أحمد برقم: 16304، وأخرجه المعجم الكبير للطبراني برقم: 1565، مسند ابویعلیٰ ترقیم الاثری: 7373»