Sunan an-Nasa'i 1757
سنن النسائي#1757SahihIt was narrated from Aishah that:The Prophet (ﷺ) would not omit four rak'ahs before Zuhr and two rak'ahs before Fajr
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: 20:160