Sahih Bukhari Volume 1, Book 12, Hadith Number 733

Narated By Abu Rafi : I offered the ‘Isha’ prayer behind Abu Huraira and he recited, “Idha-s-Sama’u-n-Shaqqat” (84) and prostrated. On my inquiring, 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.”