Once I prayed the ʿIsha' 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 Abul-Qasim, (the Prophet) (when he recited that Sura) and I will go on doing it till I meet him."  

صَلَّيْتُ مَعَ أَبِي هُرَيْرَةَ الْعَتَمَةَ فَقَرَأَ {إِذَا السَّمَاءُ انْشَقَّتْ} فَسَجَدَ فَقُلْتُ مَا هَذِهِ قَالَ سَجَدْتُ بِهَا خَلْفَ أَبِي الْقَاسِمِ ﷺ فَلاَ أَزَالُ أَسْجُدُ بِهَا حَتَّى أَلْقَاهُ