It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) would perform the two rak'ahs before the Fajr prayer so quickly that it seemed as if the call to prayer was still in his ears.
Hadith Referenceالفتح الربانی / أبواب الأذ كار الواردة عقب الصلاة / 2104
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«أخرجه مطولا البخاري: 995، ومسلم: 749 ، (انظر مسند أحمد ترقيم الرسالة: 5609 ترقیم بيت الأفكار الدولية: 6090»