yavÄ«yÄá¹sa ekÄśītir jÄyanteyÄḥ pitur ÄdeÅ›akarÄ mahÄ-Å›ÄlÄ«nÄ mahÄ-Å›rotriyÄ yajña-śīlÄḥ karma-viÅ›uddhÄ brÄhmaá¹‡Ä babhÅ«vuḥ
yavÄ«yÄá¹saḥ - younger; ekÄśītiḥ - numbering eighty-one; jÄyanteyÄḥ - the sons of JayantÄ«, the wife of Ṛṣabhadeva; pituḥ - of their father; ÄdeÅ›akarÄḥ - following the order; mahÄ-Å›ÄlÄ«nÄḥ - well behaved. well cultured; mahÄ-Å›rotriyÄḥ - extremely learned in Vedic knowledge; yajña-śīlÄḥ - expert in performing ritualistic ceremonies; karma-viÅ›uddhÄḥ - very pure in their activities; brÄhmaṇÄḥ - qualified brÄhmaṇas; babhÅ«vuḥ - became.
From this verse we have good information of how the castes are qualified according to quality and work. Ṛṣabhadeva, a king, was certainly a ká¹£atriya. He had a hundred sons, and out of these, ten were engaged as ká¹£atriyas and ruled the planet. Nine sons became good preachers of ÅšrÄ«mad-BhÄgavatam (mahÄ-bhÄgavatas), and this indicates that they were above the position of brÄhmaṇas. The other eighty-one sons became highly qualified brÄhmaṇas. These are some practical examples of how one can become fit for a certain type of activity by qualification, not by birth. All the sons of MahÄrÄja Ṛṣabhadeva were ká¹£atriyas by birth, but by quality some of them became ká¹£atriyas, and some became brÄhmaṇas. Nine became preachers of ÅšrÄ«mad-BhÄgavatam (bhÄgavata-dharma-darÅ›anÄḥ), which means that they were above the categories of ká¹£atriya and brÄhmaṇa.