(17) باب مَنْ أَدْرَكَ رَكْعَةً مِنَ الْعَصْرِ قَبْلَ الْغُرُوبِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "If anyone of you can get one rak`a of the `Asr prayer before sunset, he should complete his prayer. If any of you can get one rak`a of the Fajr prayer before sunrise, he should complete his prayer." (FR)
Reference (FR): Sahih al-Bukhari 556 (FR)
In-book reference (FR): Book 9, Hadith 33 (FR)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 10, Hadith 531 (FR)