注維摩詰經 1.82

1.82

肇曰：既得法身入無為境，心不可以智求、形不可以像取，故曰無量。六住已下名有量也。

[Seng]zhao says: Having attained the dharmakāya and entered the unconditioned realm, their mind cannot be sought through discursive intellect, and their form cannot be grasped through images; therefore it is called "boundless." From the sixth stage and below is called "having measure."