Sunan an-Nasa'i 1773
سنن النسائي#1773SahihIt was narrated from 'Abdullah bin Umar that Hafsah, the Mother of the Believers, told him:that when the Muaddhin fell silent following the call to Subh prayer and dawn had broken, he would pray two brief rak'ahs before getting up to pray
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: 20:176