What are the manners and benefits of Dhikr?

Remembrance (dhikr) has great manners and benefits. Among its manners are: sincerity to Allah, presence of heart and contemplation, performing dhikr while in a state of purity, adhering to the numbers mentioned in the Sharia, and lowering the voice during dhikr without excessive loudness. Among its benefits are: expelling Satan, pleasing the Most Merciful, removing worry and grief, bringing joy and happiness, strengthening the heart and body, illuminating the face, attracting sustenance, and bestowing upon the one who remembers awe, sweetness, and radiance.