(60) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ وَذِكْرِ الاِخْتِلاَفِ عَلَى نَافِعٍ
Ibn Umar said:
"Hafsah told me that the Messenger of Allah (ﷺ) used to pray two brief rak'ahs before Fajr, and that was after dawn had broken." (JA)
Reference (JA): Sunan an-Nasa'i 1778 (JA)
In-book reference (JA): Book 20, Hadith 181 (JA)
English translation (JA): Vol. 2, Book 20, Hadith 1779 (JA)