Bhagavatapurana 9.10.51

9.10.51

agrahīdāsanaṃ bhrātrā praṇipatya prasāditaḥ /
prajāḥ svadharmaniratā varṇāśramaguṇānvitāḥ /
jugopa pitṛvadrāmo menire pitaraṃ ca tam //

51. When his brother (Bharata) bowed down and requested him he took his seat on the throne and like a father protected his subjects, constant in their respective duties peculiar to their Varna and Asrama (caste and order) and they also regarded him as their father.