The duty of the Shudra is to serve with humility persons of the twice-born orders, viz., Brahmanas and Kshatriyas and Vaishyas. The religion of the house-holder, O king of the Nagas, consists in doing good to all creatures.
विप्रक्षत्रियवैश्यानां शुश्रूषा शूद्रकर्म तत्। गृहस्थधर्मो नागेन्द्र सर्वभूतहितैषिता॥