I saw the Messenger of Allah ﷺ raising his hands apposite the shoulders at the time of beginning the prayer and before bowing down and after coming back to the position after bowing. but he did not raise them between two prostrations.
رَأَيْتُ رَسُولَ اللَّهِ ﷺ إِذَا افْتَتَحَ الصَّلاَةَ رَفَعَ يَدَيْهِ حَتَّى يُحَاذِيَ مَنْكِبَيْهِ وَقَبْلَ أَنْ يَرْكَعَ وَإِذَا رَفَعَ مِنَ الرُّكُوعِ وَلاَ يَرْفَعُهُمَا بَيْنَ السَّجْدَتَيْنِ