أَخْبَرَنَا قُتَيْبَةُ، وَمُحَمَّدُ بْنُ مَنْصُورٍ، - وَاللَّفْظُ لَهُ - عَنْ سُفْيَانَ، عَنْ أَبِي سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ مَنْ أَدْرَكَ مِنْ صَلاَةِ الْجُمُعَةِ رَكْعَةً فَقَدْ أَدْرَكَ ‏"‏ ‏.‏

It was narrated from Abu Hurairah that: The Prophet (PBUH) said: "Whoever catches up with a rak'ah of jumu'ah prayer has caught up with it." Translation Not Available

Book Ref: Sunan An Nisai Book 14 Hadith 1426
Web Ref:  Sunan An Nisai Vol 2 Book 14 Hadith 1426