佛說佛名經 26.14

26.14

"Disciples! From beginningless time (anādikāla) down to the present day, among all our retributive hindrances, the heaviest is exclusively the Avīci Hell. As illuminated in the sūtras, we shall now briefly describe its characteristics: this hell is surrounded by seven layers of iron walls, with seven layers of iron nets covering it from above, and below are seven layers of sword forests and measureless fierce fires, eighty-four thousand yojanas in length and breadth. The bodies of the sinners completely fill it, yet due to their karmic conditions they do not obstruct one another. The fire above penetrates below, and the fire below penetrates above, intersecting and passing through from east, west, south, and north, like fish in a frying pan whose fat and grease are completely burned away; the suffering of sinners therein is also like this.