仁王般若經疏 3.190

3.190

爾時無量大眾下，品內大段第四，時眾聞法歡喜奉行。就文有三：初列百億菩薩眾，第二列百億舍利弗等，第三五百億色欲二界天、六道阿須輪王等眾，悉奉行也。

From "At that time, within the immeasurable great assembly" onward is the fourth major section of the chapter: the assembly at that time hears the Dharma, rejoices, and puts it into practice. In the text there are three [parts]: first, listing the assembly of hundreds of millions of bodhisattvas; second, listing the hundreds of millions of Śāriputras and others; third, the assembly of fifty billion beings from the form and desire realms, the asura kings of the six destinies, and others, all putting it into practice.