四明尊者教行錄 3.107

3.107

三問：金剛藏說：佛甚微智辭異意同，空有不二不異不盡。意明三諦皆是經體。荊溪何故特云空假即中方為經體？

Question 3: Vajragarbha said: 'The Buddha's extremely subtle wisdom has different phrasing but the same meaning; emptiness and existence are neither two, nor different, nor exhausted.' The intention is to clarify that the three truths are all the substance of the sūtra. Why did Jingxi specifically say that emptiness and provisionality being identical to the middle is the substance of the sūtra?