SB 3.18.18
evam gadabhyam gurvibhyam
haryakso harir eva ca
jigisaya susamrabdhav
anyonyam abhijaghnatuh
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In this way, the demon Haryaksa and the Lord, the Personality of Godhead, struck each other with their huge maces, each enraged and seeking his own victory.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Haryaksa is another name for Hiranyaksa, the demon.