法華論疏 1.154

1.154

三名大方廣者，方廣是大乘通名，即釋此經為諸菩薩說大乘經。又大乘文義俱廣，故名大方廣也。此論文釋者，正以教廣為廣，故云無量大乘門，門則教也。隨順眾生根住持成就者，釋大乘門無量也。以大乘眾生根無量故大乘教無量，以教無量、以教能顯理順機故名住持。

"Third, it is called the Great Vaipulya": "Vaipulya" (方廣) is a general name for the Mahāyāna, which precisely explains that this sūtra is "spoken as a Mahāyāna sūtra for bodhisattvas." Furthermore, both the text and the meaning of the Mahāyāna are vast (廣), hence it is called the Great Vaipulya (大方廣). In the explanation of this treatise text, it takes the breadth of the teaching specifically as "vast," hence it says "immeasurable Mahāyāna gateways," gateways meaning teachings. "Accomplished by maintaining them in accord with the faculties of sentient beings" explains the immeasurability of the Mahāyāna gateways. Because the faculties of Mahāyāna sentient beings are immeasurable, the Mahāyāna teachings are immeasurable; because the teachings are immeasurable and because the teachings can reveal the principle in accord with the capacities [of beings], it is called "maintaining."