Text 3]
The Characteristics of King Purañjana
1135
PURPORT
Of course in the modern age one may be amazed how the princes could stand in the water for ten thousand years. However, living within air or living within water is the same process; one simply has to learn how to do it. The aquatics live within water for their whole life span. Certain favorable conditions are created to enable them to live within water. In those days, however, people used to live for 100,000 years. Out of so many years, if one could spare ten thousand years for the sake of austerity, he would be assured of success in his future life. This was not very astonishing. Although such a feat is impossible in this age, it was quite possible in Satya-yuga.
TEXT 3
प्राचीनबर्हिषं क्षत्रः कर्मस्वासक्तमानसम् ।  
 नारदोऽध्यात्मतत्त्वज्ञः कृपालुः प्रत्यबोधयत् ॥ ३ ॥
prācīnabarhiṣam kṣattaḥ 
    karmasu āsakta-mānasam 
    nārado 'dhyātma-tattva-jñaḥ 
    kṛpāluḥ pratyabodhayat
prācīnabarhiṣam—unto King Prācīnabarhiṣat; kṣattaḥ—O Vidura; karmasu—in fruitive activities; āsakta—attached; mānasam—with this mentality; nāradaḥ—the great sage Nārada; adhyātma—spiritualism; tattva-jñaḥ—one who knows the truth; kṛpāluḥ—being compassionate; pratyabodhayat—gave instructions.
TRANSLATION
While the princes were undergoing severe austerities in the water, their father was performing different types of fruitive activities. At this time the great saint Nārada, master and teacher of all spiritual life, became very compassionate upon the King and decided to instruct him about spiritual life.
PURPORT
As pointed out by Prabodhānanda Sarasvatī Thākura, a great devotee of Lord Caitanya,  kaivalya , or merging into the Brahman effulgence, is just like going to hell. He similarly states that elevation to the upper planetary systems for the enjoyment of heavenly life is just so much phantasmagoria.