صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب النوافل - ذكر البيان بأن مسارعته صلى الله عليه وسلم إلى الركعتين قبل الفجر كان أكثر من مسارعته إلى الغنيمة التي يغنمها
Section on voluntary prayers – clarification that the Prophet’s eagerness for the two rak’ahs before Fajr was greater than for any worldly gain
1 hadith
Hadith 2457
Sayyidah Aisha Siddiqa (may Allah be pleased with her) narrates: I never saw the Prophet Muhammad (peace be upon him) perform any voluntary prayer more swiftly than this, nor did I see the Prophet (peace be upon him) seek any gain as eagerly as he would perform the two rak'ahs (Sunnah) before the morning (Fajr) prayer.