Ibn ‘Umar said that the Prophet (ﷺ) made a prostration in the noon prayer, then stood up and bowed; and they thought he recite <i>Tanzil</i>, i.e. <i>sura as-Sajda</i> (Al-Qur’an; 32). Abu Dawud transmitted it.

وَعَنِ ابْنِ عُمَرَ: أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سَجَدَ فِي صَلَاةِ الظُّهْرِ ثُمَّ قَامَ فَرَكَعَ فَرَأَوْا أَنَّهُ قَرَأَ تَنْزِيلَ السَّجْدَةَ. رَوَاهُ أَبُو دَاوُد