"Shall I not show you how the Messenger of Allah ﷺ prayed?" So he prayed, and he only raised his hands once.  

أَنَّهُ قَالَ أَلاَ أُصَلِّي بِكُمْ صَلاَةَ رَسُولِ اللَّهِ ﷺ فَصَلَّى فَلَمْ يَرْفَعْ يَدَيْهِ إِلاَّ مَرَّةً وَاحِدَةً