Sunan an-Nasa'i 1772
سنن النسائي#1772SahihIt was narrated from Ibn 'Umar that Hafsah, the Mother of the Believers, :Told him that when the Muaddhin fell silent, Allah's Messenger (ﷺ) would pray two brief 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: 20:175