妙法蓮華經玄義 6.98

6.98

相攝者，就脩多羅中出十一部。若偈與直說，相對言之，脩多羅中得出九部，但無二偈。偈陀中得出十部，但無直說脩多羅也。祇夜中得出九部，無脩多羅，亦無偈經也。

Regarding 'mutual subsumption': from within sūtra, eleven divisions emerge. If verses and direct expositions are contrasted, within sūtra nine divisions can emerge, lacking only the two kinds of verses. Within gāthā ten divisions can emerge, lacking only the directly spoken sūtras. Within geya nine divisions can emerge, lacking sūtras and also lacking verse scriptures.