Bhagavatapurana 5.4.19

5.4.19

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sa kadācid aṭamāno bhagavān ṛṣabho brahmāvarta-gato brahmarṣi-pravara-sabhāyāṃ prajānāṃ niśāmayantīnām ātmajān avahitātmanaḥ praśraya-praṇaya-bhara-suyantritān apy upaśikṣayann iti hovāca //

19. Once in his progress through his kingdom the glorious Rishabha coming into Brahmavarta, while all the people were looking on, spoke as follows to his sons in order to teach them as well as the world, though they had controlled their mind and showed thorough discipline by their great modesty and love.