Bhagavatapurana 3.26.72

3.26.72

tam asmin pratyag-ātmānaṃ dhiyā yoga-pravṛttayā /
bhaktyā viraktyā jñānena vivicyātmani cintayet //

72. By devotion (to the Supreme Being), renunciation (of other things), concentration of the mind and the knowledge

gained thereby, one should contemplate the Pratyagatman (Kshetragna) in this body, but as distinct from it (from the body of cause and effect).