Jīngāngdǐng dàjiàowáng jīng shū 金剛頂大教王經疏
Commentary on the Great-Teaching-King Sūtra of the Vajraśekhara (Jp. Kongōchō Daikyōō-gyō sho) by 圓仁 (Ennin, 撰)
About the work
A seven-fascicle commentary by Ennin (圓仁, 794–864), the Heian Tendai master and leading Tang-pilgrim monk (nittō hakke 入唐八家), on the Vajraśekhara-sūtra (KR6j0024, T18n0865). It is the principal Heian Tendai-Esoteric (Taimitsu) commentary on the Vajradhātu scripture, paralleling Yīxíng’s Dàrìjīng shū (T39n1796) on the Garbhadhātu side.
Abstract
Ennin’s commentary on the Vajraśekhara is the most substantial Heian-era Japanese commentary on the scripture, drawing on Esoteric materials he had imported from his 838–847 Tang study mission. During his nine years in Tang China, Ennin had received Esoteric instruction from several masters in the Chángān, Yángzhōu, and Wǔtáishān areas — including instruction in the Vajraśekhara tradition that he then transmitted to the Tendai monastic establishment at Mount Hiei. His seven-fascicle commentary covers the principal sections of the Vajraśekhara: the introduction at the Akaniṣṭha heaven, the awakening of the Sarvārthasiddhi-bodhisattva by all the Tathāgatas, the construction of the Vajradhātu mandala with its 37 deities, the abhiṣeka sequences, and the sādhana prescriptions for the principal deities.
The commentary is a foundational document of the Taimitsu 台密 (Tendai-Esoteric) interpretation of the Vajraśekhara, distinct from the Tōmitsu 東密 (Shingon) interpretation deriving from Kūkai. Where Kūkai’s exposition of the Vajraśekhara (KR6j0025–0026) emphasizes the dual-mandala doctrine and the Esoteric ji-ji ritual-doctrinal apparatus, Ennin’s commentary integrates the Vajraśekhara with Tiāntái 天台 doctrinal categories — the yī xīn sān guān threefold contemplation, the yīniàn sānqiān doctrine — producing a Tendai-Esoteric synthesis that became the Taimitsu doctrinal trademark.
The composition dates from Ennin’s post-Tang period at Mount Hiei (847–864), most likely his tenure as the third Tendai zasu (854–864).
Translations and research
- Reischauer, Edwin O. Ennin’s Diary: The Record of a Pilgrimage to China in Search of the Law. New York: Ronald Press, 1955. — Translation of Ennin’s travel diary; background to his Esoteric studies in Tang.
- Reischauer, Edwin O. Ennin’s Travels in T’ang China. New York: Ronald Press, 1955. — Companion volume.
- Stone, Jacqueline I. Original Enlightenment and the Transformation of Medieval Japanese Buddhism. Honolulu: University of Hawai’i Press, 1999. — Discusses Taimitsu doctrinal development.
- Groner, Paul. Saichō: The Establishment of the Japanese Tendai School. Honolulu: University of Hawai’i Press, 2000.