The Book of the Times (of Prayer)
6/30. Chapter:
Whoever Catches Up With A Rak'ah Of The Prayer
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ التِّرْمِذِيُّ، قَالَ حَدَّثَنَا أَيُّوبُ بْنُ سُلَيْمَانَ، قَالَ حَدَّثَنَا أَبُو بَكْرٍ، عَنْ سُلَيْمَانَ بْنِ بِلاَلٍ، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ أَدْرَكَ رَكْعَةً مِنْ صَلاَةٍ مِنَ الصَّلَوَاتِ فَقَدْ أَدْرَكَهَا إِلاَّ أَنَّهُ يَقْضِي مَا فَاتَهُ " .
It was narrated from Salim that the Messenger of Allah (ﷺ) said: "Whoever catches up with a Rak'ah of one of the prayers has caught up with it, except that he has to make up the portion that he missed."
Reference : Sunan an-Nasa'i 558In-book reference : Book 6, Hadith 65English translation : Vol. 1, Book 6, Hadith 559