Religious principles; one’s natural occupation. The capacity to render service, which is the essential quality of a living being. The occupational eternal duty of the living entity, regarded as inseparable from the soul himself; The Sanskrit term dharma is variously translated as duty, virtue, morality, righteousness, or religion, but no single English word conveys the whole meaning of dharma. The Vedic sage Jaimini defined dharma as a good which is of the nature of a command that leads to the attainment of the highest good.
In Bg. 18.66, Lord Kṛṣṇa commands us to give up all other dharmas and surrender to Him. This is the paro-dharma, or supreme command (good, duty, virtue, etc.) of the Vedas.