(60) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ وَذِكْرِ الاِخْتِلاَفِ عَلَى نَافِعٍ
It was narrated that Ibn 'Umar said:
"Hafsah told me that the Messenger of Allah (ﷺ) used to pray two rak'ahs beore Subh." (JA)
Reference (JA): Sunan an-Nasa'i 1770 (JA)
In-book reference (JA): Book 20, Hadith 173 (JA)
English translation (JA): Vol. 2, Book 20, Hadith 1771 (JA)