妙法蓮華經玄贊 10.245

10.245

贊曰：第四無邊勝。有二：一聞書功德無邊，二供養功德無邊。得無邊邊，不得有邊邊，故名佛不得。

The Eulogy says: Fourth, boundless superiority. There are two [parts]: first, boundless merit of hearing and writing; second, boundless merit of making offerings. Attaining the limit of the boundless, and not being able to attain the limit of the bounded; therefore it is said that the Buddha cannot [attain its limit].