Srimad Bhagavatam Canto 04, Chapter 25, Text 52

SB 4.25.52

asuri nama pascad dvas
 taya yati purañjanah
gramakam nama visayam
 durmadena samanvitah
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
On the western side was a gate named Asuri. Through that gate King Purañjana used to go to the city of Gramaka, accompanied by his friend Durmada.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The gate on the western side of the city was known as Asuri because it was especially meant for the asuras. The word asura refers to those who are interested in sense gratification, specifically in sex life, to which they are overly attracted. Thus Purañjana, the living entity, enjoys himself to his greatest satisfaction by means of the genitals. Consequently he used to go to the place known as Gramaka. Material sense gratification is also called gramya, and the place where sex life is indulged in to a great extent is called Gramaka. When going to Gramaka, Purañjana used to be accompanied by his friend Durmada. The word visaya refers to the four bodily necessities of life — eating, sleeping, mating and defending. The word durmadena may be analyzed in this way: dur means dusta, or “sinful,” and mada means “madness.” Every living entity who is in contact with material nature is called mada, or mad. It is said:
 
pisaci paile yena mati-cchanna haya
 maya-grasta jivera haya se bhava udaya
 
(Prema-vivarta)
 
When a person is haunted, he becomes practically insane. When one is in an insane condition, he speaks all kinds of nonsense. Thus to become engaged in sense gratification, one has to accept a friend who is durmada, or badly affected by the material disease.
 
The words asuri nama pascad dvah are significant in another sense. The sunrise is first visible from the eastern side — the Bay of Bengal — and gradually it progresses toward the west. It is practically experienced that people in the West are more addicted to sense gratification. Sri Caitanya Mahaprabhu Himself has certified, pascimera loka saba mudha anacara (Cc. Adi 10.89): the more one goes to the western side, the more he will find people disinterested in spiritual life. He will find them behaving against the Vedic standards. Because of this, people living in the West are more addicted to sense gratification. In this Bhagavatam it is confirmed: asuri nama pascad dvah. In other words, the population on the western side is interested in an asuric civilization, that is, a materialistic way of life. Lord Caitanya consequently wanted this Krsna consciousness movement to be preached on the western side of the world so that people addicted to sense gratification might be benefited by His teachings.
Srimad Bhagavatam Canto 04, Chapter 25, Text 51
Srimad Bhagavatam Canto 04, Chapter 25, Text 53