Lecture Bombay December 14,1974
So we have to come to this platform, spiritual platform. We are suffering on account of being on the material platform. So by keeping yourself always in the fire of Kṛṣṇa or Kṛṣṇa consciousness, you are transferred to the spiritual world. Very nice example, this iron rod, red hot. You cannot use it for any other purpose. It is simply for burning. Similarly you can become Kṛṣṇized. That we have already discussed in the previous verses.
The, anyone who is fully absorbed in Kṛṣṇa consciousness in devotional service he is two kinds of external body, namely the gross body, material body, this gross body made of earth, water, fire, air and sky, and the subtle body made of mind, intelligence, and ego. These two kinds of body become dissolved. Just like if you eat something, put into your stomach, and if you have got good digestive function, then everything will be digested.
Srimad-Bhagavatam 3.26.2