The keys to the life of the heart lie in reflecting upon the Qur’an, being humble before Allah in secret, and leaving sins.

—Ibn al-Qayyim [d. 751H/1350CE]

Hadiyyul-Arwah ila Biladil-Afrah [p.45] of Ibn ul-Qayyim

(Read on pg 36, Ibn Taymiyyah, Disease of the Hearts and Their Cures. Daar us-Sunnah Publishers. UK: 2006.)