(60) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ وَذِكْرِ الاِخْتِلاَفِ عَلَى نَافِعٍ
It was narrated that Abdullah said:
"My sister Hafsah told me that he used to pray two brief rak'ahs before Fajr." (JA)
Reference (JA): Sunan an-Nasa'i 1774 (JA)
In-book reference (JA): Book 20, Hadith 177 (JA)
English translation (JA): Vol. 2, Book 20, Hadith 1775 (JA)