"Shall I not show you how the Messenger of Allah ﷺ prayed?" So he prayed, and he only raised his hands once. (Using translation from Nasāʾī 1058)
أَنَّهُ قَالَ «أَلَا أُصَلِّي بِكُمْ صَلَاةَ رَسُولِ اللهِ ﷺ؟ فَصَلَّى فَلَمْ يَرْفَعْ يَدَيْهِ إِلَّا مَرَّةً»