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).
Reference: Sahih al-Bukhari 548 In-book : Book 9, Hadith 25 USC-MSA web (English) : Vol. 1, Book 10, Hadith 523 (deprecated)
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