Happiness is attained by three things: being patient when tested, being thankful when receiving a blessing, and being repentant upon sinning.

The soul will never become pious and purified except through undergoing afflictions. It is the same as gold that can never be pure except after removing all the base metals in it.

Whoever desires to purify his heart, then let him prefer Allah to his desires

Every 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

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

When there is money in your hand and not in your heart, it will not harm you even if it is a lot; and when it is in your heart, it will harm you even if there is none in your hands.

Repel the thought, for if you don't, it becomes an idea. So repel the idea, for if you don't it will become a desire. So fight against that(desire), for if you don't, it will become a determination and a passion. And if you don't repel that, it will become an action. And if you don't replace it with its opposite, it will become a constant habit. So at that point, it will be difficult for you to change it.