How long one can survive by chanting mrutyumjaya mantra?

Hari Om Swamijee. There is one gurujee who instruct unwell disciples to chant mrutyumjaya whenever they are ill. How long disciples can keep live like this? - From a seeker, Geeta

Swami replied:- The longevity of a human being is not exactly fixed on a specific time of a specific date. The longevity can be extended or reduced as per the scriptures. The scripture says that the time you sleep after sunrise reduces your longevity by that extent. The scripture also says that if you serve the old people, your longevity is extended. The extension of the longevity is within certain limits and cannot be infinite. Extremity is not the sense of any word. If a blessing is given that you should live for a long time, it does not mean that you will live till the end of this world. The worship of God is recommended on such occasions so that you will develop your sincerity at least based on your strong wish for a benefit from God. Such devotion may slowly become pure devotion, which is without any desire to be fulfilled from God. All this is a gradual process of leading you to the ultimate goal through intermediate steps, which may have the defect of desire.