Ibn Al-Qayyim said, “In the heart are disorders that cannot be remedied except by responding to Allah. In it is a desolate feeling that cannot be removed except by intimacy with Him solitude. In it is sadness which will not leave except by happiness with knowing Him and truthfulness in his dealings. In it is anxiety that is not made tranquil except by gathering for His sake and fleeing to Him from His punishment. In it is a fire of regret which cannot be extinguished except by satisfaction with His commands, prohibitions, and decrees, and embracing patience with that until the time he meets Him. In it is a strong desire that will not cease until He is the only one who is sought. In it is a void that cannot be filled except by His love, turning to Him, always remembering Him, and being sincere to Him. Were a person to be given the entire world and everything in it, that would never fill the void.”
Source: Madarij As-Salikeen 3/156
