It was narrated from 'Alqamah, that Abdullah said:"Shall I not tell you about the prayer of the Messenger of Allah (ﷺ)? He stood and raised his hands the first time and then he did not do that again
حدیث 1027 — سنن النسائي 11:152
SahihSahihIsnaad Sahih
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا الْفُضَيْلُ، عَنِ الأَعْمَشِ، عَنْ عُمَارَةَ بْنِ عُمَيْرٍ، عَنْ أَبِي مَعْمَرٍ، عَنْ أَبِي مَسْعُودٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تُجْزِئُ صَلاَةٌ لاَ يُقِيمُ الرَّجُلُ فِيهَا صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ " .
It was narrated that Abu Mas'ud said:"The Messenger of Allah (ﷺ) said: 'The prayer is not valid if a man does not bring his backbone to rest while bowing and prostrating
It was narrated from Anas that the Messenger of Allah (ﷺ) said:"Be moderate in bowing and prostration, and do not rest your forearms along the ground like a dog