The Book of The At-Tatbiq (Clasping One's Hands Together)
12/20. Chapter:
Concession allowing one not to do that
Sunan an-Nasai
أَخْبَرَنَا مَحْمُودُ بْنُ غَيْلاَنَ الْمَرْوَزِيُّ، قَالَ حَدَّثَنَا وَكِيعٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَاصِمِ بْنِ كُلَيْبٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الأَسْوَدِ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، أَنَّهُ قَالَ أَلاَ أُصَلِّي بِكُمْ صَلاَةَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَصَلَّى فَلَمْ يَرْفَعْ يَدَيْهِ إِلاَّ مَرَّةً وَاحِدَةً .
It was narrated from Abdullah that he said: "Shall I not show you how the Messenger of Allah (ﷺ) prayed?" So he prayed, and he only raised his hands once.
Reference : Sunan an-Nasa'i 1058In-book reference : Book 12, Hadith 30English translation : Vol. 2, Book 12, Hadith 1059