大方廣佛華嚴經疏 6.21

6.21

In [the explanation of] the fifth, "in a single hair," and so on, it is explained according to the power of the inconceivable liberation in the verse. Unobstructedness has two meanings: first, simply with respect to what is manifested, the many lands within a hair are themselves mutually unobstructed; second, with respect to both subject and object, a single hair is not large and many lands are not small, so that oneness and multiplicity, largeness and smallness, are all unobstructed. Furthermore, because there are no marks of largeness or smallness, this attains liberation from the obstacle of grasping onto attachments.