The heart becomes sick, as the body becomes sick, and its remedy is al-Tawbah (repentance) and protection [from transgression]. It becomes rusty as a mirror becomes rusty, and its clarity is obtained by remembrance. It becomes naked as the body becomes naked, and its beautification is al-Taqwa. It becomes hungry and thirsty as the body becomes hungry, and its food and drink are knowledge, love, dependence, repentance and servitude.
Ibn Qayyim Al-JawziyyaAnd if a person were given all of the world and what is in it, it would not fill his emptiness.
Ibn Qayyim Al-JawziyyaEvery drop of sweat and every breath we take in life, if not taken for the sake of Allah, will lead to regret and sorrow on the Day of Judgment
Ibn Qayyim Al-JawziyyaThere is no captive in a worse state than the one who is captivated by his worst enemy (Shaytan) and there is no prison which is tighter than the prison of hawa (desire) and there is no bond/fetter more strong than the bond of desire. How, then, will a heart which is captivated, imprisoned and fettered travel unto Allah and the Home of the Hereafter?
Ibn Qayyim Al-Jawziyya