مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 1032
Prayer
Prostration while Reciting the Qur’an - Section 2
وَعنهُ: أَنه كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقْرَأُ عَلَيْنَا الْقُرْآنَ فَإِذَا مَرَّ بِالسَّجْدَةِ كَبَّرَ وَسجد وسجدنا مَعَه. رَوَاهُ أَبُو دَاوُد
He said: God’s Messenger used to recite the Qur'an to us, and when he came to a place where a prostration should be made he said “God is most great” and prostrated himself, and we prostrated ourselves along with him. Abu Dawud transmitted it.
Mishkat al-Masabih, 1032ضَعِيف (الألباني)