Remember, when the hypocrites and those in whose hearts there was a disease were openly saying: “Allah and His Messenger promised us nothing but delusion!”
Meaning:-
Hypocrite:a person who pretends to have virtues, moral or religious beliefs,principles, etc., that he or she does not actually possess, especially aperson whose actions belie stated beliefs.
Delusion: illusion, misconception, misunderstanding, mistake, misbelief, error.