佛說觀佛三昧海經 2.11

2.11

「阿鼻地獄縱廣正等八萬由旬，七重鐵城，下十八鬲，四面劍林亦十八行，東方復有十八小地獄，以為圍遶；南方十八鬲以為圍遶；西方十八鬲以為圍遶；北方十八鬲以為圍遶。地下自然有熾猛火，燒然鐵城鐵網俱熾，一切熱焰周迴還旋，下過十八鬲。若有眾生犯五逆者，身滿其中受如此苦，晝夜不息間無空缺，劫欲盡時四門自開。諸罪人等見東門外一切劍林，如清涼林，從下鬲起至第二鬲，第二鬲起至第三鬲，乃至於上走趣東門。羅剎獄卒以熱鐵叉逆刺其眼，精如融銅流出于地，即時躄倒遍滿十八鬲中，其心迷悶滿一小劫，爾乃還起復向南門。如是四方如前無異，晝夜受苦逕一大劫，劫盡更生餘小地獄。其餘眾獄形狀大小受報輕重，形類好醜一切雜報，慈三昧中當復廣說。

The Avīci hell is eighty thousand yojanas in length and breadth, perfectly square, with seven layers of iron walls and eighteen tiers below, and forests of swords on four sides in eighteen rows. To the east there are eighteen minor hells surrounding it; to the south there are eighteen tiers surrounding it; to the west there are eighteen tiers surrounding it; and to the north there are eighteen tiers surrounding it. Beneath the earth there are naturally roaring, fierce fires that burn the iron walls and iron nets until both blaze, with all the scorching flames swirling around and passing downward through the eighteen tiers. If there are sentient beings who commit the five heinous sins, their bodies fill it, enduring such suffering day and night without ceasing, with no gap or interval. When the kalpa is about to end, the four gates open naturally. The sinners see all the forests of swords outside the eastern gate looking like cool forests; rising from the lower tier to the second tier, and from the second tier to the third tier, and so forth upward, they run toward the eastern gate. The rākṣasa hell-wardens pierce their eyes in counter-thrusts with heated iron pitchforks; their eye-vitality, like molten copper, flows out upon the ground, and they immediately fall prostrate, filling the eighteen tiers, their minds faint and overwhelmed for a full minor kalpa. Only then do they rise again and head toward the southern gate. Thus it is for the four directions, no different from before, suffering agony day and night through an entire great kalpa. When the kalpa ends, they are reborn into the remaining minor hells. The shapes and sizes of those other hells, the lightness and heaviness of retribution, the handsome and ugly forms, and all the miscellaneous retributions, will be explained in detail in the [chapter on] the samādhi of loving-kindness.