As-Salaam alaikum,
Abdullah Ibn Amr, may Allah be pleased with him, says that one day the Prophet, Sallallahu alaihi Wasallam, was talking about prescribed prayers and he said:--

"Whoso is regular in his prayers it will illumine his face, testify to the
firmness of his faith and be the cause of his salvation on the Day of
Judgement. And whoso neglects the prayers will neither acquire any
glow nor staunchness of faith nor any means of salvation and he will
join, on the Day of Resurrection, the company of Korah (Qarun), Pharaoh,
Haman and Ubay bin Khalaf."
(Ahmad, Darimi, Baihaqi)