華嚴經旨歸 1.88

1.88

初、無定相者，謂以小非定小，故能容大；大非定大，故能入小。〈十住品〉云「金剛圍山數無量，悉能安置一毛端，欲知至大有小相，菩薩因此初發心。」解云：此中明大非大，故有小相也。

First, "no fixed marks" means that because the small is not definitively small, it can accommodate the large; because the large is not definitively large, it can enter the small. The "Chapter on the Ten Abodes" says: "Mounts Cakravāḍa, boundless in number, / Can all be placed on a single tip of hair; / Wanting to know that the utmost large has the mark of the small, / The bodhisattva for this reason first generates the mind [for awakening]." The explanation says: This clarifies that the large is not large, and therefore possesses the mark of the small.