Sunan an-Nasa'i 522
سنن النسائي#522SahihIt was narrated from 'Abdullah bin 'Amr - and (one of the narrators) Shu'bah said:"Sometimes he (Qatadah, his teacher) narrated it as a Marfu' report and sometimes he did not" - "The time for Zuhr prayer is until 'Asr comes, and the time for 'Asr prayer is until the sun turns yellow. the time for Maghrib is until the twilight disappears, and the time for 'Isha' is until the night is halfway through, and the time for Subh is until the sun rises
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 Muslim
In-book reference: 6:29