Sunan an-Nasa'i 583
سنن النسائي#583SahihIt was narrated from Ibn 'Umar that Hafsah said:"When the dawn appears, the Messenger of Allah (ﷺ) would only pray two short 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: 6:90