法華義疏 8.316

8.316

有二種到：一者、因到；二者、果到。言因到者，如《涅槃》云「須陀洹人八萬劫到，乃至辟支佛人十千劫到」，謂到菩提心，即十住位成種性人也。至此位時免凡夫位及退為二乘，必到佛道故名為到。二者、三界為分段生死，二乘之人居變易生死，度此五處免二種生死得大涅槃，謂到果也。

There are two kinds of reaching: first, reaching in cause; second, reaching in fruition. As for reaching in cause, as the Nirvāṇa [Sūtra] says: "A srotāpanna reaches it in eighty thousand kalpas, up to a pratyekabuddha who reaches it in ten thousand kalpas"—this refers to reaching the mind of bodhi, namely becoming a person of the lineage at the ten abodements stage. When reaching this stage, one avoids the status of an ordinary person and retrogressing into the two vehicles; because one will surely reach the Buddha path, it is called 'reaching'. Second, the three realms are the saṃsāra of discrete lifetimes, while persons of the two vehicles dwell in transformation saṃsāra; crossing these five places frees one from both kinds of saṃsāra and attains great nirvāṇa—this refers to reaching in fruition.