仁王經疏 3.180

3.180

釋曰：第四、入位時分。梵音阿僧祇劫，此云無數劫。謂日月歲數不可數故，名阿僧祇。或三災等劫，不可數故。乃至大小乘宗，三大阿祇名阿僧祇。今於此中，依日月歲數，非三災等。僧伽陀位者，相傳釋云性種性，或云離著，謂證人空而不執著我有情等。此意說云：一僧祇修行習忍，始入性種性。

Commentary: Fourth, the period of entry into the stage. In Sanskrit, asaṃkhyeya-kalpa; here rendered as "incalculable kalpas." Because the count of days, months, and years cannot be reckoned, it is called asaṃkhyeya. Or, it is because kalpas such as the three disasters cannot be reckoned. Further, in both the Great and Lesser Vehicle schools, three great asaṃkhyeyas are called asaṃkhyeya. Here, it is based on the count of days, months, and years, not on the three disasters and the like. As for the "saṃgata stage," tradition explains it as the nature-gotra, or as "freedom from attachment," meaning realizing the emptiness of the person and not clinging to a self, sentient beings, and so forth. The intended meaning is: practicing the habituation-patience for one asaṃkhyeya, one first enters the nature-gotra.