Sunan an-Nasa'i, Volume 1, Book 6, Hadith 558 (DarusSalam) ⓘ
It was narrated from Salim, from his father, that the Prophet said: "Whoever catches up with with a Rak'ah of Jumu'ah or any other (prayer), his prayer is complete."
أَخْبَرَنِي مُوسَى بْنُ سُلَيْمَانَ بْنِ إِسْمَاعِيلَ بْنِ الْقَاسِمِ، قَالَ حَدَّثَنَا بَقِيَّةُ، عَنْ يُونُسَ، قَالَ حَدَّثَنِي الزُّهْرِيُّ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَنْ أَدْرَكَ رَكْعَةً مِنَ الْجُمُعَةِ أَوْ غَيْرِهَا فَقَدْ تَمَّتْ صَلاَتُهُ " .
also referenced under: Book 6, Hadith 562 (In-Book)