Ramayana
अपश्यत्स यमं तत्र देवमग्निपुरस्कृतम् । विधानमुपतिष्ठन्तं प्राणिनो यस्य यादृशम् ॥ 7-21-2 ॥
There he beheld the god Yama, attended by Agni (Fire) at his fore, ordaining for each living being the dispensation according to its deserts.
english translation