(60) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ وَذِكْرِ الاِخْتِلاَفِ عَلَى نَافِعٍ
It was narrated from Ibn Umar that Hafsah said:
"When dawn came, the Messenger of Allah (ﷺ) would not pray anything but two brief rak'ahs." (AR)
Reference (AR): Sunan an-Nasa'i 1776 (AR)
In-book reference (AR): Book 20, Hadith 179 (AR)
English translation (AR): Vol. 2, Book 20, Hadith 1777 (AR)