Sunan an-Nasa'i 567
سنن النسائي#567SahihIt was narrated from 'Ata' bin Yazid that he heard Abu Sa'eed Al-Khudri say:"I heard the Messenger of Allah (ﷺ) say: 'There is no prayer after Fajr until the sun has clearly risen, and no prayer after 'Asr until the sun has fully set
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 - Agreed Upon
In-book reference: 6:74