Jièdù 戒度 (Sòng, fl. early 13th c.)
A southern Sòng Pure Land / Vinaya commentator, signing his works with the hào Zhuō’ān 拙庵 (“Hut of Clumsiness”). Lifedates not securely established. He is the principal Sòng follower and defender of 元照 Yuánzhào Língzhī 元照靈芝 (1048–1116) — the great late-Northern-Sòng Vinaya master who turned to Pure Land in his later years and produced the Guānwúliángshòu fó jīng yìshū 觀無量壽佛經義疏 and Ēmítuó jīng yìshū 阿彌陀經義疏, the standard Lǜzōng 律宗 Pure Land commentaries.
Jièdù’s two surviving major works — the Guānwúliángshòu jīng fúxīn lùn 觀無量壽經扶新論 KR6p0009 and the Guānwúliángshòu jīng yìshū zhèngguānjì 觀無量壽經義疏正觀記 KR6p0010 — both defend Yuánzhào’s Pure Land doctrine against Tiāntái-school critics, especially the followers of Yīngōng 因公法師 (= Yuánzhào Mǐyīn 元照謐因, the Tiāntái Sìmíngpài exponent of Zhīlǐ’s lineage). The Fúxīn lùn refutes the Tiāntái master Bóxīn Mǐyīn’s Fǔzhèng jiě 輔正解, which had attacked Yuánzhào’s Xīnshū 新疏, while the Zhèngguānjì glosses Yuánzhào’s Yìshū itself. Jièdù’s prefaces routinely characterise his teacher as a 律師 (“Vinaya master”) who took up Pure Land devotional practice; this dual Vinaya / Pure Land profile is the distinctive feature of the Línglóng 靈龍 (= 靈芝 Língzhī) lineage.
He also wrote a now-lost Wénchí jì 聞持記 on Yuánzhào’s Ēmítuó jīng yìshū, jointly transmitted with Yuánzhào’s text as the KR6p0015 Ēmítuó jīng yìshū wénchí jì 阿彌陀經義疏聞持記.
His dates are estimated as fl. early thirteenth century: Yuánzhào died in 1116, and Jièdù’s polemical replies presuppose multiple intervening generations of TiāntáiLǜzōng controversy. The Japanese editor’s preface to KR6p0010 reports that the Wénchí jì had long been transmitted in Japan but the Zhèngguānjì was rare, and was finally re-cut from a single copy preserved in the Chánglóngsì 長瀧寺 sūtra-archive in Mino 美濃 province.