Sunan an-Nasa'i 1775
سنن النسائي#1775SahihIt was narrated from Abdullah bin Umar, from Hafsah, that:The Messenger of Allah (ﷺ) used to pray two rak'ahs when dawn had broken
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 ZaiIsnaad Sahih
In-book reference: 20:178