Imam Khomeini explains the matter through his theological works as following:
It requires extra hard practice, going to some lengths, spiritual exercises, perseverance, and discipline, until one is able to fix one’s attention completely on nothing but God and cut himself off from all else.
If someone is able to do this, he has reached a great felicity.
However, with the least attention to this world it is impossible to be cut off from all else but Allah.
Someone who wants to perform the fast of the blessed month of Ramadan with such manners as he has been asked to, must cut himself off completely from all else so that he can observe the manners for the celebration and feast [of Allah], coming to know of the station of the Host, insofar as this is possible.
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Imam advised believers to accept responsibilities of blessed month of Ramadan
In this noble month, in which you have been invited to the divine banquet, if you do not gain insight [ma‘rifat] about God the Almighty nor insight into yourself, it means that you have not properly participated in the feast of Allah, Imam further explained.
You must not forget that in this blessed month, which is the ‘month of Allah’, in which the way of divine mercy is opened to the servants of God and the satans and devils, according to some reports, are locked in chains.
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