Sunan an-Nasa'i 1761
سنن النسائي#1761SahihIt was narrated that Ibn Umar said:"Hafsah told me that when dawn glowed, the Prophet (ﷺ) would pray two rak'ahs
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: 20:164