Imamsheds the light on the matter as following:
Although the remembrance of God and the dhikr of that Sacred Essence is a quality of the heart, and if the heart is immersed in dhikr all the benefits that accrue from it are obtained by the heart, it is better that the remembrance in the heart be followed by oral dhikr.
The most perfect and meritorious of the degrees of dhikr is that it should be present in all levels of a man’s existence, that its domain should extend to the outward and the inward, the manifest and the concealed realms of his being.
Thereat God, the Supreme and the Glorious, becomes manifest in the core of his being. The inward form of the heart and the soul take the form of the Beloved’s remembrance, and the actions of the heart and the body take on the form of remembrance.
The seven realms of corporeal being, as well as the inward domains, are conquered by the Divine dhikr and made subject to the remembrance of the Absolute Beauty.
Rather, if the inward form of the heart assumes the reality of dhikr, and the realm of the heart is conquered by it, its sovereignty extends to all the other domains, Imam further explains.
The movements and pauses of the eyes, the tongue, the hands and the feet, and the actions of all other members and faculties, are accompanied with the remembrance of God, making no move against their duties. Thereupon, their movements and pauses begin and end with the dhikr of God:
In the Name of Allah shall be its course and its berthing. (11:41)
Its influence penetrates into all the realms, which are moulded as a result in accordance with the reality of the Names and the Attributes. Rather, they assume the form of the Greatest of the Names of Allah (ism Allah al-’a’zam), becoming its manifestation (mazhar).
And this is the ultimate limit of human perfection and the ultimate goal of the hopes of the elect of Allah (ahl Allah).
To the same degree that there is an inadequacy in this regard and a shortcoming in the influence of dhikr, to the same extent does the degree of human excellence falls short of perfection, for the inadequacies of the inward and the outward interpenetrate each other.
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