One can attain perfect stage of liberation from birth and death simply by knowing the Supreme Personality of Godhead and there is no other way to achieve this perfection.
In this horrible condition of life there is only one way of liberation—to engage in the activities of transcendental chanting and hearing of the holy name of the Supreme Lord.
Purport on Srimad Bhagavatam 4.7.44
Love of God is transcendental to liberation [mukti], and thus it is called the fifth stage of spiritual realization, above the stage of liberation.
Srimad Bhagavatam Introduction.
Any person in the month of Karttika, who eats on the leaf plate of palasa, the remnants of the lord, becomes free from all sins and achieves liberation. Besides brahmanas (twice born persons), others are not advised to eat from this leaf because this leaf is said to be the leaf of the supreme lord.
All the demigods and all the philosophers who desire liberation bow down to the Supreme Personality of Godhead.
One who acts to serve Krishna with his body, mind, intelligence and words is a liberated person, even within this material world.