說無垢稱經疏 4.140

4.140

贊曰：重釋前相。空理義云：以佛觀見有情本性寂滅空理為涅槃體，故說眾生當證此空真如為般涅槃，故與尊者二理皆均。應理義云：以佛觀見本性真如為涅槃體，故說有情當證真如，得餘三種之圓寂故。尊者當得，有情亦當得。既難當得，故知以本性淨涅槃難餘三種。

The commentary says: This re-explains the previous characteristics. In terms of the principle of emptiness: Because the Buddha views the quiescent empty principle of the original nature of sentient beings as the substance of Nirvāṇa, he therefore says that sentient beings will realize this empty tathatā as parinirvāṇa; hence the two principles are equal for both [sentient beings] and the Venerable. In terms of the Yuktivāda principle: Because the Buddha views the original nature of tathatā as the substance of Nirvāṇa, he therefore says that sentient beings will realize tathatā and obtain the other three kinds of perfect quiescence. If the Venerable will attain it, sentient beings will also attain it. Since he challenges their future attainment, we know that he uses the naturally pure Nirvāṇa to challenge the other three kinds.