There is no doubt about it that the prayers (five daily prayers) are the cause of blessings, but these blessings are not the lot of everybody. Only he whom God enables to pray is the one who prays. Otherwise the prayer is nothing more than a shell in the hand of the one who prays. It has nothing to do with the kernel. Same is the case with the Kalima. The person whom God enables to recite the Kalima is really the person who recites it. Unless one gets to drink from the heavenly fountain, reciting the Kalima and offering the prayers, these things cannot be of any avail. The prayer which produces a sweetness and a zeal for more of worship and which strikes a communication with God and is offered in all humility brings about a change in the life of the man. And this change is instantaneously perceived by the one who prays like this. This change makes him realise that he is not what he was before.
(Malfoozat vol. 6, pg. 378)