رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1105
The Book of Virtues
Briefness to be Adopted in Performing the two Rak'ah Sunnah before Fajr Prayer, their time and the Surah to recite in them
وَعَن حَفصةَ رَضِيَ اللَّهُ عَنْهَا أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كَانَ إِذَا أذن الْمُؤَذِّنُ لِلصُّبْحِ، وَبَدَا الصُّبْحُ صَلَّى رَكْعَتَيْنِ خَفِيفَتَيْنِ. ((مُتَّفَقٌ عَلَيْهِ)). وَفِي رِوَايَةٍ لِمُسْلِمٍ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ إِذَا طَلَعَ الْفَجْرُ لاَ يصلى إِلاَّ رَكْعَتَيْنِ خَفِيفَتَيْنِ.
Hafsah (May Allah be pleased with her) reported: The Messenger of Allah (ﷺ) used to perform two short Rak'ah prayer when it was dawn and the Mu'adhdhin had called Adhan (for the Fajr prayer). [Al-Bukhari and Muslim].
Riyad as-Salihin, 1105