大般涅槃經義記 6.279

6.279

辨中，初句釋名顯過，汎解無間有四種義：一趣報無間，人中捨壽即入阿鼻，間無住處；二身形無間，阿鼻大城八萬由旬，一人入中身亦遍滿，一切人入身亦如是，間無空處；三壽命無間，一生其中，壽命一劫，間無斷絕；四受苦無間，一生其中，苦苦相續，無樂暫間，故曰無間。今此且依後義釋之。二「假使」下辨其身相，此即是其身形無間。三「寒地獄」下舉輕顯重。四「四方」下辨其苦相。五「作一逆」下辨因定果。依如《毘曇》，隨罪多少各別一劫；今此所說共在一劫，輕重為異，《阿含經》中所說同此。

In the explanation, the first sentence explains the name and reveals the transgression. Generally explained, "uninterrupted" (avīci) has four meanings: First, uninterrupted retribution of rebirth: when life is relinquished among humans, one immediately enters Avīci, with no intermediate abode in between. Second, uninterrupted physical form: the great citadel of Avīci is eighty thousand yojanas across; if one person enters it, their body fills it completely, and if all beings enter, their bodies are likewise so, with no empty space in between. Third, uninterrupted lifespan: once born therein, the lifespan lasts one kalpa, with no severance or interruption in between. Fourth, uninterrupted suffering: once born therein, suffering upon suffering continues in succession, with no interim of pleasure, hence it is called "uninterrupted". Here, it is provisionally explained according to the last meaning. Second, from "even if" onward distinguishes the physical characteristics, which is uninterrupted physical form. Third, from "cold hells" onward adduces the light to reveal the grave. Fourth, from "the four quarters" onward distinguishes its aspects of suffering. Fifth, from "committing a single [anantarya] transgression" onward distinguishes the cause and determines the retribution. According to the Abhidharma, depending on the number of offenses, each entails a distinct kalpa; what is spoken here is that they share a single kalpa, differing in gravity, which agrees with what is taught in the Āgama Sūtras.