(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." (DE)
Reference (DE): Sunan an-Nasa'i 1770 (DE)
In-book reference (DE): Book 20, Hadith 173 (DE)
English translation (DE): Vol. 2, Book 20, Hadith 1771 (DE)