Once I prayed the `Isha' prayer with Abu Huraira and he recited, "Idha s-samaa'u n-shaqqat" (84) and prostrated. I said, "What is that?" He said, "I prostrated behind Abu l-Qasim, (the Prophet) (when he recited that Sura) and I will go on doing it till I meet him."
Reference: Sahih al-Bukhari 768 In-book : Book 10, Hadith 162 USC-MSA web (English) : Vol. 1, Book 12, Hadith 735 (deprecated)
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