Sunan an-Nasa'i 556
سنن النسائي#556SahihIt was narrated that Abu Hurairah said:"The Messenger of Allah (ﷺ) said: 'Whoever catches up with a Rak'ah of the prayer has caught up with it
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: 6:63