1111
Sahih+2
It was narrated that Abu Mas'ud said:"The Messenger of Allah (ﷺ) said: 'No prayer is valid in which a man does not maintain his back (at ease) when bowing and prostrating
SahihAbu Ghuddah
SahihAl-Albani
It was narrated that Abu Mas'ud said:"The Messenger of Allah (ﷺ) said: 'No prayer is valid in which a man does not maintain his back (at ease) when bowing and prostrating