(57) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ
It was narrated from Hafsah that:
When the call for Subh prayer was given, the Messenger of Allah (ﷺ) would pray two brief rak'ahs before going to the prayer. (ID)
Reference (ID): Sunan an-Nasa'i 1760 (ID)
In-book reference (ID): Book 20, Hadith 163 (ID)
English translation (ID): Vol. 2, Book 20, Hadith 1761 (ID)