Take Your Prayer Seriously

“Negligence with regard to namaz, expressed in delaying or abandoning, can lead the admitter of it – if he continues in this spirit – to disbelief (kufra); because namaz – according to what you have already recognized – is the first nourishment for faith (imáana!) ”, – the end of the quote.

See Al-Fi’khu-l-Manhaji, 102/1.