四明十義書 1.116

1.116

若觀彼一珠，雖見眾珠及此一珠，實未遍觀，以眾珠光影皆為彼一珠中所具，故此如觀外十界則見內心也。

If one contemplates that jewel, although one sees all the jewels as well as this single jewel, in reality one has not yet universally contemplated them; because the light and reflections of all the jewels are all possessed within that single jewel, this is like contemplating the external ten realms and thereby seeing the inner mind.