法華論疏 3.263

3.263

如經「皆謂如來出釋氏宮，去伽耶城不遠，坐於道場，得阿耨多羅三藐三菩提」故。

Because the sūtra states: "All think that the Tathāgata departed the Śākya palace, was not far from the city of Gayā, sat at the site of enlightenment, and attained anuttarā-samyak-saṃbodhi."