ENOfficial
It was narrated that Abu Hurairah said: “I saw the Messenger of Allah (ﷺ) raising his hands during prayer until they were parallel with his shoulders when he started to pray, when he bowed and when he prostrated.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، وَهِشَامُ بْنُ عَمَّارٍ، قَالاَ حَدَّثَنَا إِسْمَاعِيلُ بْنُ عَيَّاشٍ، عَنْ صَالِحِ بْنِ كَيْسَانَ، عَنْ عَبْدِ الرَّحْمَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَرْفَعُ يَدَيْهِ فِي الصَّلاَةِ حَذْوَ مَنْكِبَيْهِ حِينَ يَفْتَتِحُ الصَّلاَةَ، وَحِينَ يَرْكَعُ، وَحِينَ يَسْجُدُ .
sunnah.com