大般涅槃經集解 8.74

8.74

案僧宗曰：明依圓教生解，眾魔外道莫能爼壞。非唯自不可壞，所得眷屬亦復堅固，經之力也。

Sengzong states: This clarifies that based on the complete teaching, understanding is generated, so that the hordes of māras and non-Buddhists cannot undermine or destroy them. Not only are they themselves indestructible, but the retinue they attain is also firm and solid; this is the power of the sūtra.