The highest level of fasting is to disengage oneself from other than Allāh (SwT). Every thought, speech, action, etc. is solely for Allāh (SwT). The fasting one in this level ensures that not only does he observe the first two levels of fasting, but protects his heart from other than Allāh (SwT). Perhaps this noble dictum of Imām al-Sādiq (‘a) refers to this very station:
أَلْقَلْبُ حَرَمُ اللٌّهِ، فَلاََ تُسْكِنْ فِی حَرَمِ اللٌّهِ غَیْرَ اللٌّهِ.
“The heart is the sanctuary of Allāh; therefore do not make other than Allāh reside in the sanctuary of Allāh.”
The result of such a fast is ‘the Paradise of Divine Encounter’ (Jannat al-Liqā’). If we ponder over the supplications of the Holy month of Ramadān and try to understand what kind of reception and banquet we can anticipate, we would realize that it is this level of fasting that we must struggle to attain.
There are some terrorist groups such as ISIS in the Islamic world, backed by the non-Islamic western states, claim that they are representing Islam and also they are trying to establish Islamic caliphate or state. But, unfortunately they misuse the name of Islamic state to deceive the young Muslim generation. If we study their beliefs and practices we find out that ISIS has nothing to do with Islam.
The holy Quran as the main source of Islamic teachings, for all the different Islamic sects, prohibits the extremism exhibited by ISIS introducing moderation as the essential part of the faith. The holy Quran states clearly: “We made you to be a community of the middle way, so that (with the example of your lives) you might bear witness to the truth before all mankind.”  What Quran means by the middle way is totally opposed to the extremism and terrorism.
The follow-up ability of the Imam despite his old age was to such an extent that none of those close to him could claim to have seen the Imam idle or disengaged even once and wasting his time.
In this period when we were in the presence of the Imam, we observed that there was no such thing as taking off from working for the people and the Islamic Revolution.
For the Imam it made no difference whether it was summer or winter, Saturday or Friday, feast day and non-feast day. At all times he was busy either reading or worshipping or studying the various reports that he would receive.
I never saw the Imam idle even once: Hujjat al-Islam Rahimiyan