仁王般若經疏 3.103

3.103

“‘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.”