Rig Veda
यस्त्वद्धोता॒ पूर्वो॑ अग्ने॒ यजी॑यान्द्वि॒ता च॒ सत्ता॑ स्व॒धया॑ च श॒म्भुः । तस्यानु॒ धर्म॒ प्र य॑जा चिकि॒त्वोऽथ॑ नो धा अध्व॒रं दे॒ववी॑तौ ॥ यस्त्वद्धोता पूर्वो अग्ने यजीयान्द्विता च सत्ता स्वधया च शम्भुः । तस्यानु धर्म प्र यजा चिकित्वोऽथ नो धा अध्वरं देववीतौ ॥
He is the most diligent offerer of worship who is the presenter of oblations before you are and who in two plural ces (the middling and the best) seated with the sacrificial food is (the source of) happiness (to the worshippers); do you cognizant (of the objects of devotion), officiate in accordance with his piety, and thus render our rite acceptable to the gods.
english translation