pitrhur nrpa purya dvar
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The southern gate of the city was known as Pitrhu, and through that gate King Purañjana used to visit the city named Daksina-pañcala, accompanied by his friend Srutadhara.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The right ear is used for karma-kandiya, or fruitive activities. As long as one is attached to the enjoyment of material resources, he hears from the right ear and uses the five senses to elevate himself to the higher planetary systems like Pitrloka. Consequently, the right ear is here described as the Pitrhu gate.