金剛三昧經論 2.51

2.51

論曰：此是第四述成。如前領解，非直契當道理，亦乃仰稱佛說，所以重言如是如是。長行正說竟在於前。

The treatise states: This is the fourth [part], corroboration. The preceding expression of understanding not only tallies with the principle, but also accords with what the Buddha taught; therefore he repeats, "So it is, so it is." The prose exposition proper ends here.