(243) باب مَنْ أَدْرَكَ مِنَ الْجُمُعَةِ رَكْعَةً
Abu Hurairah reported the Messenger of Allah (ﷺ) as saying:
If anyone obtains a rak'ah in the prayer (along with the imam), he has obtained the whole prayer. (RU)
Reference (RU): Sunan Abi Dawud 1121 (RU)
In-book reference (RU): Book 2, Hadith 732 (RU)
English translation (RU): Book 2, Hadith 1116 (RU)