ذِكْرُ اسْتِحْبَابِ الْمُسَارَعَةِ إِلَى الرَّكْعَتَيْنِ قَبْلَ الْفَجْرِ اقْتِدَاءً بِالْمُصْطَفَى ﷺ
'A'isha reported that the Apostle ﷺ was not so much particular about observing supererogatory rak'ahs as in case of the two rak'ahs of the dawn prayer. (Using translation from Muslim 724f)
«أَنَّ نَبِيَّ اللَّهِ ﷺ لَمْ يَكُنْ عَلَى شَيْءٍ مِنَ النَّوَافِلِ أَشَدَّ مُعَاهَدَةً مِنْهُ عَلَى الرَّكْعَتَيْنِ قَبْلَ الصُّبْحِ»