ভূমিকা
Shiavault - a Vault of Shia Islamic Books Adab as-Salat: The Disciplines of the Prayer Second Revised Edition Chapter 4: Tranquility Of the important cordial disciplines of worships, especially the invoking worships, one is tranquility [ tuma'nīnah ], which is not the same tranquility as demanded by the jurisprudents (may Allah be pleased with them) in the Salat .
It is that the sālik should perform his worship with a quietude of the heart and a tranquility of the mind, because if the worship was performed in a state of anxiety and with shaky heart, the heart would not have any reaction, and no effects of worship would appear in the dominion of the heart, and the reality of the worship would not become an inner image of the heart.
One of the significances of the repetition of worships and the increase of supplications and invocations is that the heart is affected by them and there will be an emotion until, gradually, the reality of worship and supplication forms the innermost part of the sālik , and his heart unites with the spirit of worship.
Should the heart lack tranquility [ itmīnān ], quietude and serenity, there would be no effect of the supplications and the rituals on it, and they would not pass from the outer appearance and limits of the body to the dominion of the inner soul, and the cordial parts of the truth of worship would not be effected. This is one of the clear matters that need no explanation, as it could be understood by a little contemplation.
If a worship was such that the heart could have no information whatsoever about it, and there was no effect at all in the interior, it would not be kept in other dominions, nor would it ascend from the kingdom of this world to the kingdom of the heavens. And it may be that at the time of the throes of death and its horrible agonies, and the terrors and calamities of after death, the image of such a worship may completely be effaced God forbid!
From the plane of the heart, and that man may stand at the sacred presence of Allah empty-handed. For example, if one recites the noble supplication: Lā ilāha illallāh , Muhammadun Rasūlullāh (There is no god but Allah; Muhammad is the Messenger of Allah) with a calm and tranquil heart and teaches his heart to repeat it, the tongue of the heart will gradually become talking, and the outer tongue will be a follower of the heart's tongue, and then the heart will supplicate first, and the tongue will follow it.