Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 23


अप्रत्युत्थायिनं सूतमकृतप्रह्वणाञ्जलिम् ।अध्यासीनं च तान् विप्रांश्चुकोपोद्वीक्ष्य माधव: ॥ २३ ॥


apratyutthāyinaṁ sūtamakṛta-prahvaṇāñjalimadhyāsīnaṁ ca tān viprāṁścukopodvīkṣya mādhavaḥ


Lord Balarāma became extremely angry upon seeing how this member of the sūta caste had failed to stand up, bow down or join his palms, and also how he was sitting above all the learned brāhmaṇas.


Romaharṣaṇa had failed to greet Lord Balarāma in any of the standard ways for welcoming a superior personality. Also, despite being of a lower caste, he sat in a seat above the assembly of exalted brāhmaṇas.