“The heart gets sick as the body does and its cure is in asking for forgiveness and protection.
It also becomes rusty like a mirror does and it is polished by remembering Allah.
The heart can also be naked like the body and can lose its dress and decoration, which is piety..
And it can feel hunger and thirst like the body does, and its nourishment is knowledge, love, trust, and offering service to Allah.”
~ Imam Ibn al Qayyim Al-Jawziyyah