﴿ ٱلَّذِينَ هُمْ عَلَىٰ صَلَاتِهِمْ دَآئِمُونَ ﴾

“[and] who incessantly persevere in their prayer”

Allah then explained the traits of the latter, saying: (Who are constant at their worship) they constantly perform their prescribed daily prayers, whether it is at night or in the day, and they never fail to perform them.