श्रीमद् भगवद्गीता

मूल श्लोकः

कृषिगौरक्ष्यवाणिज्यं वैश्यकर्म स्वभावजम्।

परिचर्यात्मकं कर्म शूद्रस्यापि स्वभावजम्।।18.44।।

English Translation By Swami Sivananda

18.44 Agriculture, cattle-rearing and trade are the duties of the Vaisya (merchant), born of (their own) nature; and action consisting of service is the duty of the Sudra (servant-class), born of (their own) nature.