Srimad Bhagvata Mahapurana: Book 4: Chapter 24: Verses 69-79
Go on repeating this hymn with the purest of motives, O princes, (duly) discharging your sacred duties with your mind set on the Lord; this will do you good. Worship Sri Hari alone-the (supreme) Spirit dwelling in your heart and (equally) present in all creatures-extolling and meditating on Him again and again : Having received this hymn called Yogadesa as imparted by Me and retaining it (in your memory), repeat it reverently all of You with a concentrated mind, observing the vow of hermits. Intent on multiplying his progeny, it was the glorious Brahma (the lord of progenitors of the universe) who taught it at the dawn of creation to us, his (mind-born) sons, Bhrgu and others, all of whom were (equally) keen to push on (the work of) creation. Enjoined to proceed with the task of procreation, we lords of created beings all evolved various species of living beings, having got rid of ignorance through this very hymn. Even now a man devoted to Lord Vasudeva, and ever repeating it with an attentive and absorbed mind, attains blessedness before long. Of all the blessings here spiritual enlightenment leading to final beatitude is the highest. He who sails in the bark of wisdom easily crosses the ocean of misery (in the shape of metempsychosis), so difficult to cross. Imbued with reverence, he who dwells upon this hymn in praise of the Lord, sung by me, will be able to propitiate Sri Hari, (otherwise) so difficult to please. A man who is steady of mind obtains whatever he desires from that Lord, the sole repository of (all) blessings, when He is celebrated through this hymn sung by Me and is highly pleased thereby. Rising before daybreak and full of faith, any mortal who listens to or recites it (to others) with joined palms is freed from all shackles of Karma. Repeating with a concentrated mind this hymn in praise of the supreme Purusa, the Oversoul, sung by Me, O princes, practise austerities; thereby you will attain in the long run the object sought for (by you).
Thus ends the twenty-fourth discourse entitled The hymn sung by Lord Rudra°, in Book Four of the great and glorious Bhagavata-Purana, otherwise known as the Paramahamsa-Samhita.