From Sahih Bukhari (Hadith 766):
Narrated Abu Rafi`:I offered the `Isha' prayer behind Abu Huraira and he recited, "Idha s-samaa'u n-shaqqat" (84) and prostrated. On my inquiring, he said, "I prostrated behind Abul-Qasim (the Prophet) (when he recited that Sura) and I will go on doing it till I meet him
Reference: Bukhari 766