Narrated Abu Sa`id Al-Khudri: I heard Allah's Apostle saying, "There is no prayer after the morning prayer till the sun rises, and there is no prayer after the `Asr prayer till the sun sets."
Hadith ReferenceSahih Bukhari / The Book of The Times of As-Salat (The Prayers) and Its Superiority / Hadith: 586
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة