Srimad Bhagavatam Canto 05, Chapter 15, Text 04

SB 5.15.4

ya atma-vidyam akhyaya svayam samsuddho maha-purusam anusasmara.
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
King Pratiha personally propagated the principles of self-realization. In this way, not only was he purified, but he became a great devotee of the Supreme Person, Lord Visnu, and directly realized Him.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The word anusasmara is very significant. God consciousness is not imaginary or concocted. The devotee who is pure and advanced realizes God as He is. Maharaja Pratiha did so, and due to his direct realization of Lord Visnu, he propagated self-realization and became a preacher. A real preacher cannot be bogus; he must first of all realize Lord Visnu as He is. As confirmed in Bhagavad-gita (4.34), upadeksyanti te jñanam jñaninas tattva-darsinah: “One who has seen the truth can impart knowledge.” The word tattva-darsi refers to one who has perfectly realized the Supreme Personality of Godhead. Such a person can become a guru and propound Vaisnava philosophy all over the world. The paragon of bona fide preachers and gurus is King Pratiha.
Srimad Bhagavatam Canto 05, Chapter 15, Text 03
Srimad Bhagavatam Canto 05, Chapter 15, Text 05