Told him that when the Muaddhin fell silent, Messenger of Allah ﷺ would pray two brief rak'ahs. (Using translation from Nasāʾī 1772)   

أَنَّ رَسُولَ اللهِ ﷺ كَانَ يُصَلِّي رَكْعَتَيْنِ خَفِيفَتَيْنِ إِذَا بَدَا الْفَجْرُ  

"When the dawn appears, the Messenger of Allah ﷺ would only pray two short Rak'ahs." (Using translation from Nasāʾī 583)  

أَنَّهَا قَالَتْ كَانَ رَسُولُ اللهِ ﷺ إِذَا طَلَعَ الْفَجْرُ لَا يُصَلِّي إِلَّا رَكْعَتَيْنِ خَفِيفَتَيْنِ  

[Machine] The translation of the passage is: "Indeed, the Messenger of Allah ﷺ used to sometimes lie down after praying two rak'ahs before Fajr."  

أَنَّ رَسُولَ اللهِ ﷺ كَانَ إِذَا صَلَّى رَكْعَتَيْنِ قَبْلَ الْفَجْرِ رُبَّمَا اضْطَجَعَ  

[Machine] The Messenger of Allah ﷺ used to pray the two units of prayer before the dawn (Fajr) prayer, and he would shorten them until I would wonder if he had recited the Umm Al-Quran.  

كَانَ رَسُولُ اللهِ ﷺ يُصَلِّي الرَّكْعَتَيْنِ اللَّتَيْنِ قَبْلَ الْفَجْرِ فَيُخَفِّفُهُمَا حَتَّى أَقُولَ هَلْ قَرَأَ بِأُمِّ الْقُرْآنِ  

[Machine] The Messenger of Allah ﷺ used to not leave four (supererogatory units) before noon and two units before dawn.  

كَانَ رَسُولُ اللَّهِ ﷺ «لَا يَدَعُ أَرْبَعًا قَبْلَ الظُّهْرِ وَرَكْعَتَيْنِ قَبْلَ الْفَجْرِ»  

"When the dawn appears, the Messenger of Allah ﷺ would only pray two short Rak'ahs." (Using translation from Nasāʾī 583)   

«كَانَ رَسُولُ اللَّهِ ﷺ إِذَا طَلَعَ الْفَجْرُ لَا يُصَلِّي إِلَّا رَكْعَتَيِ الْفَجْرِ»  

[Machine] The Messenger of Allah ﷺ said, "The two units of prayer before Fajr (dawn) prayer are more beloved to me than the whole world and everything in it."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «الرَّكْعَتَانِ قَبْلَ الْفَجْرِ أَحَبُّ إِلَيَّ مِنَ الدُّنْيَا وَمَا فِيهَا»