(26) بَابُ تَعَاهُدِ رَكْعَتَيِ الْفَجْرِ وَمَنْ سَمَّاهُمَا تَطَوُّعًا
Narrated `Aisha:
The Prophet (ﷺ) was never more regular and particular in offering any Nawafil than the two rak`at (Sunna) of the Fajr prayer. (RU)
Reference (RU): Sahih al-Bukhari 1163 (RU)
In-book reference (RU): Book 19, Hadith 42 (RU)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 21, Hadith 260 (RU)