SHAFAQNA – A believer and the seeker of the truth must be certain that the exterior of a person can never be reformed without correcting the interior; because the source of deeds is the heart. And that is why from the pious heart, nothing but right deeds, and from the corrupt heart nothing but dishonest deeds is expected. Therefore, the most important deed is to purify the heart [1].
[1] Al-Moraqebat, Mirza Jawaad Malaki Tabrizi, Page 13.