Times of the Prayers

Bukhari :: Book 1 :: Volume 10 :: Hadith 553

Narrated Abu Huraira:

Allah's Apostle said, "Whoever could get one Rak'a (of the Fajr prayer) before sunrise, he has got the (morning) prayer and whoever could get one Rak'a of the'Asr prayer before sunset, he has got the ('Asr) prayer."