Sahih al-Bukhari 1078
Sahih al-Bukhari · Book 17: Prostration During Recital of Qur'an · Whoever recited the Verse of Sajda during the Salat (prayer) and prostrated
Narrated Abu Rafi`:
حَدَّثَنَا مُسَدَّدٌ ، قَالَ حَدَّثَنَا مُعْتَمِرٌ ، قَالَ سَمِعْتُ أَبِي قَالَ، حَدَّثَنِي بَكْرٌ ، عَنْ أَبِي رَافِعٍ ، قَالَ صَلَّيْتُ مَعَ أَبِي هُرَيْرَةَ الْعَتَمَةَ فَقَرَأَ {إِذَا السَّمَاءُ انْشَقَّتْ} فَسَجَدَ فَقُلْتُ مَا هَذِهِ قَالَ سَجَدْتُ بِهَا خَلْفَ أَبِي الْقَاسِمِ صلى الله عليه وسلم فَلاَ أَزَالُ أَسْجُدُ فِيهَا حَتَّى أَلْقَاهُ.
I offered the `Isha' prayer behind Abu Huraira and he recited Idhas-Sama' Un-Shaqqat, and prostrated. I said, "What is this?" Abu Huraira said, "I prostrated behind Abul-Qasim and I will do the same till I meet him."