Sunan an-Nasai 15291
In-book no 555أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، . أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ أَدْرَكَ مِنَ الصَّلاَةِ رَكْعَةً فَقَدْ أَدْرَكَ الصَّلاَةَ " .
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said: "Whoever catches up with a Rak'ah of the prayer, then he has caught up with the prayer."