Sunan an-Nasa'i 1769
سنن النسائي#1769SahihIbn Umar narrated that Hafsah had told him that the:Messenger of Allah (ﷺ) used to pray two brief rak'ahs between the adhan and the Iqamah of Subh prayer
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: 20:172