ENOfficial
Narrated Someone who prayed with the Prophet: Muhammad ibn Sirin said: Someone who prayed the morning prayer along with the Prophet (ﷺ) narrated to me: When he raised his head after the second rak'ah, he remained standing for a short while.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ مُفَضَّلٍ، حَدَّثَنَا يُونُسُ بْنُ عُبَيْدٍ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، قَالَ حَدَّثَنِي مَنْ، صَلَّى مَعَ النَّبِيِّ صلى الله عليه وسلم صَلاَةَ الْغَدَاةِ فَلَمَّا رَفَعَ رَأْسَهُ مِنَ الرَّكْعَةِ الثَّانِيَةِ قَامَ هُنَيَّةً .
sunnah.com