It was narrated that ‘Ali bin Abu Talib said: “When the Prophet (ﷺ) stood up to offer a prescribed prayer, he said Allahu Akbar and raised his hands until they were parallel to his shoulders. When he wanted to bow he did likewise; when he raised his head from bowing he did likewise; and when he stood up after the two prostrations he did likewise.”*
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا الْعَبَّاسُ بْنُ عَبْدِ الْعَظِيمِ الْعَنْبَرِيُّ، حَدَّثَنَا سُلَيْمَانُ بْنُ دَاوُدَ أَبُو أَيُّوبَ الْهَاشِمِيُّ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ أَبِي الزِّنَادِ، عَنْ مُوسَى بْنِ عُقْبَةَ، عَنْ عَبْدِ اللَّهِ بْنِ الْفَضْلِ، عَنْ عَبْدِ الرَّحْمَنِ الأَعْرَجِ، عَنْ عُبَيْدِ اللَّهِ بْنِ أَبِي رَافِعٍ، عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ، قَالَ كَانَ النَّبِيُّ ـ صلى الله عليه وسلم ـ إِذَا قَامَ إِلَى الصَّلاَةِ الْمَكْتُوبَةِ كَبَّرَ وَرَفَعَ يَدَيْهِ حَتَّى يَكُونَا حَذْوَ مَنْكِبَيْهِ وَإِذَا أَرَادَ أَنْ يَرْكَعَ فَعَلَ مِثْلَ ذَلِكَ، وَإِذَا رَفَعَ رَأْسَهُ مِنَ الرُّكُوعِ فَعَلَ مِثْلَ ذَلِكَ، وَإِذَا قَامَ مِنَ السَّجْدَتَيْنِ فَعَلَ مِثْلَ ذَلِكَ .
sunnah.com