210
Śrīmad-Bhāgavatam
[Canto 9, Ch. 14]
supplying water to the trunk, branches, twigs, leaves and so on. In Satya-yuga people knew how to fulfill the necessities of life simply by worshiping Nārāyaṇa, the Supreme Personality of Godhead. The same purpose can be served in this age of Kali by the chanting of the Hare Kṛṣṇa  mantra , as recommended in the  Bhāgavatam .  Kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet . Simply by chanting the Hare Kṛṣṇa  mantra , one becomes free from the bondage of material existence and thus becomes eligible to return home, back to Godhead.
TEXT 49
पुरुरवस एवासीत् त्रयी त्रेतामुखे नृप । अग्निना प्रजया राजा लोकं गान्धर्वमेयिनान् ॥४९॥
purūravasa evāsīt trayī tretā-mukhe nṛpa agninā prajayā rājā lokam gāndharvam eyivān
purūravasaḥ —from King Purūravā;  eva —thus;  āsīt —there was;  trayī —the Vedic principles of  karma ,  jñāna  and  upāsanā ;  tretā-mukhe —in the beginning of the Tretā-yuga;  nṛpa —O King Parikṣit;  agninā —simply by generating the fire of sacrifice;  prajayā —by his son;  rājā —King Purūravā;  lokam —to the planet;  gāndharvam —of the Gandharvas;  eyivān —achieved.
TRANSLATION
O Mahārāja Parikṣit, at the beginning of Tretā-yuga, King Purūravā inaugurated a  karma-kāṇḍa sacrifice . Thus Purūravā, who considered the  yajñic fire  his son, was able to go to Gandharvaloka as he desired.
PURPORT
In Satya-yuga, Lord Nārāyaṇa was worshiped by meditation ( kṛte yad dhyāyato viṣṇum ). Indeed, everyone always meditated upon Lord Viṣṇu, Nārāyaṇa, and achieved every success by this process of meditation. In the next  yuga , Tretā-yuga, the performance of  yajña  began ( tretāyāṁ