istvagni-jihvam payasa

 purusam yajusam patim

nimlocaty arka asinam

 agny-agare samahitam

 

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 

 

The sun was setting, and the sage was sitting in trance after offering oblations to the Supreme Personality of Godhead, Visnu, whose tongue is the sacrificial fire.

 

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 

 

Fire is considered to be the tongue of the Personality of Godhead Visnu, and oblations of grains and clarified butter offered to the fire are thus accepted by Him. That is the principle of all sacrifices, of which Lord Visnu is the master. In other words, the satisfaction of Lord Visnu includes the satisfaction of all demigods and other living beings.