"Indeed, from the GREATEST of mistakes, which some of those who pray fall into, is abandoning being in the state of ease in the Salaah. Indeed the Prophet (sallallaahu alayhi wa sallam) considered the one who does that, to be from the most EVIL of those who steal.”
The Messenger of Allaah (sallallaahu alayhi wa sallam) stated:
"The most evil of those who steal, is the one who steals from his Salaah."
The companions stated:
"Oh Messenger of Allaah, how does he steal from his salaah?"