仁王般若經疏 3.103

3.103

「有所不出，故名障道。逆三界疑，修集無量功德故，即入斯陀含位，復習行八阿僧祇劫中行諸陀羅尼門故，常行無畏觀不去心。」

“‘Having that which does not emerge, hence it is called the obstructing path.’ Going against doubt in the three realms, because of cultivating and gathering immeasurable merits, one immediately enters the stage of a sakṛdāgāmin; further practicing the doors of all dhāraṇīs within eight asaṃkhyeya kalpas, constantly practicing the fearless contemplation without leaving the mind.”