Sunan an-Nasa'i 1453
سنن النسائي#1453SahihIt was narrated from Ibn 'Abbas that:The Messenger of Allah (ﷺ) stayed in Makkah (for fifteen days), praying each prayer with two 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 ZaiIsnaad Hasan
In-book reference: 15:21