大般涅槃經疏 28.19

28.19

「我經中說遠離」下。第九爭論，世第一在欲界通三界。若薩婆多云：色界四根本禪能發世第一法。曇無德人云：色欲兩界通發五方便，無有論明無色界發五方便者。唯犢子部云三界併發，在凡夫時已作等智斷惑至無色界，而後時更修無漏斷惑至無色界，仍前所斷，即發方便，故云三界併發。文中為三，即各執一界。

From "In my sūtras I say that departing from" below, this is the ninth debate, on whether the supreme worldly dharma resides in the desire realm or is common to the three realms. If according to the Sarvāstivādins, the four fundamental dhyānas of the form realm are able to give rise to the supreme worldly dharma. The Dharmaguptakas say that both the form and desire realms commonly give rise to the five preparatory stages; no treatise explains that the formless realm gives rise to the five preparatory stages. Only the Vātsīputrīyas say that the three realms all give rise to them together: when one was an ordinary being, one had already applied conventional knowledge to sever afflictions up to the formless realm, and later one further cultivated the uncontaminated path to sever afflictions up to the formless realm; still relying on what was previously severed, one then gives rise to the preparatory stage, hence they say that the three realms all give rise to them. The text has three parts, each clinging to one realm.