華嚴經探玄記 19.26

19.26

第六善現行知識中，初舉法勸修內，國名實利根者，國者境位分齊也。般若離倒稱理名實，明照生後故名利根，此是託處顯第六行。城者，防外守內，是妙智用。簡狹取廣故云普，通入遊涉故復稱門。普則是門，普門即城，皆持業釋。此約法辨。又釋：城攝眷屬，為多所趣，故名普門。此約事釋也。長者普眼妙香者，智照根藥普熏眾生，故以為名。

Regarding the good friend of the sixth practice, good manifestation: first, within adducing the Dharma to encourage cultivation, the country named Benefiting Roots (Śūradṛḍha): "country" is the boundary of the objective sphere and rank. Prajñā, being free from inversion and according with principle, is named "real" (śūra); illuminating and giving birth to what follows, it is named "sharp roots" (dṛḍha); this is relying on the place to reveal the sixth practice. "City" protects the outside and guards the inside, which is the function of sublime wisdom. Excluding the narrow and taking the broad, it is called "universal"; entering and roaming through without obstruction, it is again called "gate." "Universal" is the gate, and the "universal gate" is the city; both are karmadhāraya compounds. This is distinguished in terms of the Dharma. Another explanation: the city gathers the retinue and is that toward which many resort; hence it is named Samantamukha (Universal Gate). This is explained in terms of concrete facts. The elder Samantanetra-sugandha: his wisdom illuminates faculties like medicine, universally perfuming sentient beings; hence he is named thus.