صحيح البخاري Sahih Bukhari كتاب مواقيت الصلاة The Book of The Times of As-Salat (The Prayers) and Its Superiority
بَابُ مَنْ أَدْرَكَ مِنَ الصَّلاَةِ رَكْعَةً:

(29) Chapter. Whoever got (or was able to offer) one Raka of a prayer (in time).

1 hadith
Hadith 580
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ ، قَالَ : أَخْبَرَنَا مَالِكٌ ، عَنِ ابْنِ شِهَابٍ ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ ، عَنْ أَبِي هُرَيْرَةَ ، أَنّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ : " مَنْ أَدْرَكَ رَكْعَةً مِنَ الصَّلَاةِ فَقَدْ أَدْرَكَ الصَّلَاةَ " .
Narrated Abu Huraira: Allah's Apostle said, "Whoever could get one rak`a of a prayer, (in its proper time) he has got the prayer."
Hadith Reference Sahih Bukhari / The Book of The Times of As-Salat (The Prayers) and Its Superiority / Hadith: 580
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة