法華論疏 1.311

1.311

以無量時不可得故，不可思議、不可稱、不可量者，示現過彼阿僧祇劫不可得故，復示現五種劫：一者夜、二者晝、三者月、四者時、五者年，示現彼無量無邊劫故。

Because an immeasurable time cannot be attained, inconceivable, ineffable, and immeasurable, it manifests that surpassing those asaṃkhyeya kalpas cannot be attained; it further manifests five kinds of kalpa: first, night; second, day; third, month; fourth, season; fifth, year, in order to manifest those immeasurable and boundless kalpas.