妙法蓮華經玄贊 2.46

2.46

贊曰：此結也。肇公云「此皆菩薩無生身，無生身者無處不生故言無生，無生故塞三界門，無處不生故垂形六道。」

The commentary: This is the conclusion. Master Zhao said: 'These are all the unproduced bodies of bodhisattvas; unproduced bodies do not fail to be born anywhere, hence called "unproduced"; because they are unproduced, they block the gates of the three realms; because there is nowhere they are not born, they manifest forms in the six destinies.'