妙法蓮華經玄義 10.109

10.109

涅槃當四，通入佛性；別教次第後見佛性；方等保證，二不見性（云云）。

In the Mahāparinirvāṇa-sūtra, the corresponding four all penetrate into buddha-nature; in the distinctive teaching, through sequential stages one later sees buddha-nature; in the Vaipulya, as a provisional verification, two do not see the nature (and so forth).