Sunan an-Nasa'i 1760
سنن النسائي#1760SahihIt 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 20:163