Sahih al-Bukhari
Sahih al-Bukhari 690b
When should those who are behind the Imam prostrate?
Arabic hadith text
حَدَّثَنَا أَبُو نُعَيْمٍ، عَنْ سُفْيَانَ، عَنْ أَبِي إِسْحَاقَ، نَحْوَهُ بِهَذَا
Translation
Narrated Abu 'Is-haq
As above.