Narrated Anas bin Malik: We used to pray the `Asr prayer and after that if someone happened to go to the tribe of Bani `Amr bin `Auf, he would find them still praying the `Asr (prayer).
Hadith ReferenceSahih Bukhari / The Book of The Times of As-Salat (The Prayers) and Its Superiority / Hadith: 548
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة