(14) باب اسْتِحْبَابِ رَكْعَتَيْ سُنَّةِ الْفَجْرِ وَالْحَثِّ عَلَيْهِمَا وَتَخْفِيفِهِمَا وَالْمُحَافَظَةِ عَلَيْهِمَا وَبَيَانِ مَا يُسْتَحَبُّ أَنْ يُقْرَأَ فِيهِمَا
'A'isha reported Allah's Messenger as saying:
The two rak'ahs at dawn are better than this world and what it contains. (ID)
Reference (ID): Sahih Muslim 725 a (ID)
In-book reference (ID): Book 6, Hadith 118 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1573 (ID)