仁王護國般若波羅蜜多經疏 2.379

2.379

The commentary explains: Repeating 'so it is': 'just as you have said' confirms the expressive text; 'attained the real meaning' confirms the expressed meaning. Therefore, it is repeated: 'so it is, so it is.' 'Inconceivable' praises the fact that its text and meaning cut off the path of thought and words. From here, the fourth part shows that only buddhas can know this.