Sunan an-Nasa'i 817
سنن النسائي#817SahihIt was narrated from Al'Irbad bin Sariyah that the Messenger of Allah (ﷺ) used to send Salah on the first row three times and on the second row once
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 ZaiSahih
In-book reference: 10:41