Lord Visnu in heart like

 
As the small flames within burn everything within the room, similarly Lord Visnu, situated in the heart of the yogi, burns up all kinds of impurities.
The word mat-parah is most significant in this connection. How one can become a mat-parah is described in the life of Maharaja Ambarisa. Srila Baladeva Vidyabhusana, a great scholar and acarya in the line of the mat-parah, remarks: "mad-bhakti-prabhavena sarvendriya-vijaya-purvika svatma drstih sulabheti bhavah." "The senses can be completely controlled only by the strength of devotional service to Krsna." Also the example of fire is sometimes given: "As the small flames within burn everything within the room, similarly Lord Visnu, situated in the heart of the yogi, burns up all kinds of impurities." The Yoga-sutra also prescribes meditation on Visnu, and not meditation on the void. The so-called yogis who meditate on something which is not the Visnu form simply waste their time in a vain search after some phantasmagoria. We have to be Krsna conscious-devoted to the Personality of Godhead. This is the aim of the real yoga.    (More...)