Bhagavatapurana 5.5.20

5.5.20

tasmād bhavanto hṛdayena jātāḥ sarve mahīyāṃsam amuṃ sanābham /
akliṣṭa-buddhyā bharataṃ bhajadhvaṃ śuśrūṣaṇaṃ tad bharaṇaṃ prajānām //

20. You are all born of My heart (which is Satva); therefore do you all dutifully serve this worthy Bharata your eldest brother in sincerity and that will be service to Me and that will constitute your duty of protecting the subjects.