Bhagavatapurana 5.22.4

5.22.4

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tam etam iha puruṣās trayyā vidyayā varṇāśramācārānupathā uccāvacaiḥ karmabhir āmnātair yoga-vitānaiś ca śraddhayā yajanto 'ñjasā śreyaḥ samadhigacchanti //

4. Here mortals worship the Sun who has been just now spoken of by following the path of duties laid down in the three Vedas for *Varnas* and *asramas*, by the righteous acts, great and small, described in the Vedas, through extensive course of meditation, with faith and piety and attain to the desired goal (eternal happiness).