(5) باب فِي وَقْتِ صَلاَةِ الْعَصْرِ
Abu Hurairah reported the Messenger of Allah (ﷺ) as saying:
If anyone says a rak'ah of the 'Asr prayer before sunset, he has observed (the 'Asr prayer), and if anyone performs a rak'ah of the Fajr prayer, he has observed (the Fajr prayer). (DE)
Reference (DE): Sunan Abi Dawud 412 (DE)
In-book reference (DE): Book 2, Hadith 22 (DE)
English translation (DE): Book 2, Hadith 412 (DE)