कृषिगौरक्ष्यवाणिज्यं वैश्यकर्म स्वभावजम्।परिचर्यात्मकं कर्म शूद्रस्यापि स्वभावजम्।।18.44।।
kṛiṣhi-gau-rakṣhya-vāṇijyaṁ vaiśhya-karma svabhāva-jam paricharyātmakaṁ karma śhūdrasyāpi svabhāva-jam
Agriculture, cattle-rearing, and trade are the duties of the Vaisya (merchant), born of their own nature; and service is the duty of the Sudra (servant-class), born of their own nature.