Valmiki Ramayana Yuddha Kanda Sarga 73 Shloka 21

ततः then, हुतभुक्सदृशप्रभः equal to fire in brilliance, राक्षसश्रेष्ठः foremost of the Rakshasas, मन्त्रसत्तमैः best of mantras, हुतभोक्तारम् fire god, मन्त्रवत् with mantras, विधिवत् as per tradition, तदा then, जुहव worshipped.

Then the foremost of Rakshasas, who was like fire god in brilliance worshipped fire god with chanting of mantras as per tradition.