* Excellence of Actions depends on one's Heart:"Actions are distinguished, one from the other, with respect to their excellence in the Sight of Allah in accordance with the condition of the heart, not by their number or form, but rather due to the strength of the caller, his or her truthfulness, his or her sincerity and the extent to which he or she prefers Allah over himself or herself." -Ibn Qayyim
* The heart is the leader of the body:"The heart has been singled out for this because it is the leader of the body, and through the purification of the leader the subjects become purified, and with his corruption they become corrupted. So if you, O servant of Allah, wish to cure your heart then it is upon you to be truthful with regards to seeking refuge with Allah and putting your trust in Him, to pray a great deal of supererogatory prayers, to perform the actions of obedience to Allah frequently, to pray the night prayer while the people are sleeping, and to treat your heart by making it continuously stick to the remembrances and by befriending only the righteous ... and to frequently recite the Qur'an. May Allah allow all of this to be preserved by him." -Ibn Hajr al-Asqalani
* "The hearts are three types:
* The Life Of The Heart:
In a dua the Prophet (SAWS) supplicated,
* "The life of the heart and its illumination is the cause of all good to be found in it and its death and darkness is the cause of all evil to be found in it."