In general, there is nothing more beneficial to the heart than reading the Qur-aan with contemplation. Indeed it gathers the levels of all people, the affairs of all creation and the status of the knowledgeable. It is what leads a person to attain love, to yearn, fear, hope, repent, to depend, to be content, patient and grateful along with the rest of the issues that bring life and completion to the heart. It also condemns all immoral behavior and mannerisms that ruin the heart and cause its destruction.
If people knew the benefits of reading the Qur-aan with contemplation, they would occupy their time with it and nothing else. If a person reads it with contemplation and comes across a verse he is in need of to treat his heart, he repeats it even if it were a hundred times, even if it were for the whole night. For reading one Aayah with contemplation and understanding is better that completing the whole Qur-aan without contemplation and understanding, it is more beneficial to the heart and closer to increasing Eemaan and experiencing the sweetness of the Qur-aan.
 Notice the use of the Qur-aan as a treatment for spiritual as well as physical illnesses in the speech of the scholars.