It wasnarrated that Abu Hurairah said:
"The Messenger of Allah (ﷺ)said: 'Whoever catches one Rak'ah of prayer, he has caught it.'" (RU)
English reference (RU): Vol. 1, Book 5, Hadith 1122 (RU)
Arabic reference (RU): Book 5, Hadith 1176 (RU)