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金剛般若波羅蜜經開題

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Text ID
KR6c0101
Date
806–835
Dynasty
日本

Jīngāng bānruò bōluómì jīng kāití 金剛般若波羅蜜經開題

Opening Exposition of the Vajracchedikā Prajñāpāramitā Sūtra by 空海 (撰)

About the work

A one-juan early-Heian Japanese Esoteric kaidai 開題 (literally, “opening of the title” — a Shingon-school exegetical genre that unpacks the meaning of a sūtra title and the doctrinal frame of the whole text) on the Vajracchedikā Prajñāpāramitā (KR6c0023, Kumārajīva’s Diamond Sūtra). Composed by Kūkai 空海 (空海, 774–835), founder of the Japanese Shingon 真言 school. The text exemplifies Kūkai’s signature two-tier hermeneutics — the xiǎnlüè 顯略 (apparent / abbreviated) and shēnmì 深祕 (deep / esoteric) readings of the same scripture — and applies the full Esoteric apparatus (pañca-buddha schemes, the sìfómǔ 四佛母 four-mother-bodhisattvas, mantra-letter mysticism, etc.) to the Vajracchedikā. Preserved in Taishō Vol. 57, No. 2201 (CANWWW gives the title as 金剛般若波羅蜜經解題, a variant orthography for 開題).

Abstract

The work opens by laying out the two-tier hermeneutic framework characteristic of Kūkai’s commentaries: jīn shì sī sūduōlǎn lüè yǒu èr qù: yī xiǎnlüè, èr shēnmì 今釋斯蘇多覽略有二趣。一顯略二深祕 (“In the present exposition of this sūtra there are, in brief, two approaches: first the apparent-and-abbreviated, second the deep-and-esoteric”). The xiǎnlüè tier “uses many names and phrases to express one principle”; the shēnmì tier holds that “in every single name and phrase boundless principles of meaning are contained.” Each tier is then sub-divided into Sanskrit and Chinese title-readings (the “two-country reading,” 唐梵二國説).

On the apparent tier, Kūkai gives the standard Madhyamika reading: the title Vajracchedikā Prajñāpāramitā combines four nouns — vajra (堅實 “diamond-hard reality”), prajñā (智惠 “wisdom”), pāramitā (到彼岸 “crossing to the further shore”), and sūtra (不改之軌範 “unalterable canonical norm”) — and surveys the six known Chinese versions (Kumārajīva, Bodhiruci, Paramārtha, Dharmagupta, Xuánzàng, Yìjìng), noting that each uses a slightly different setting (Śrāvastī, Bhagavān, Jetavana, etc.) for the same sūtra.

On the esoteric tier — the principal contribution — Kūkai performs the signature Shingon move: re-reading the title as the proper name of an esoteric deity. Jīngāng bānruò bōluómìduō is identified with the Vajra-Pāramitā Bodhisattva 金剛波羅蜜菩薩, one of the four perfection-bodhisattvas (sì fómǔ 四佛母 “four mother-buddhas”) of the Vajradhātu Mandala 金剛界曼荼羅 — these are Vajra-, Ratna-, Dharma-, and Karma-pāramitā bodhisattvas, the four female-aspect prajñā deities surrounding Mahāvairocana. Through this single re-identification, the Vajracchedikā is no longer a Mādhyamika prajñā discourse but an Esoteric samādhi dhāraṇī of the Vajradhātu pantheon, and the line yīqiè zhū fó jí zhū fó ānòuduōluó sānmiǎo sānpútí fǎ jiē cóng cǐ jīng chū 一切諸佛及諸佛阿耨多羅三藐三菩提法皆從此經出 (“all buddhas and all buddha anuttara-samyak-saṃbodhi dharmas come forth from this sūtra”) becomes a literal cosmogonic statement about the four-pāramitā mother-deities generating all buddha-figures. Kūkai then applies the conventional sì xītán 四悉檀 (four-siddhānta) Tiāntái-derived hermeneutic to the title, integrated with the Esoteric mandala scheme.

The dating is anchored to Kūkai’s post-806 productive period in Japan after his return from the Chángān study with Huìguǒ 惠果; the absolute terminus is his death in 835. The text is one of a family of Kūkai kaidai on Prajñāpāramitā literature: see also KR6c0218 (Rénwángjīng kaidai), KR6c0121 (Rishukyō kaidai), and KR6c0199 (Hannya-shingyō hiken).

Translations and research

  • Hakeda Yoshito, Kūkai: Major Works, Columbia University Press, 1972 — translates several of Kūkai’s kaidai-genre works and the Hannya shingyō hiken; provides the principal English context.
  • Ryūichi Abé, The Weaving of Mantra: Kūkai and the Construction of Esoteric Buddhist Discourse, Columbia, 1999 — the standard English monograph on Kūkai’s exegetical method, including the kaidai genre.
  • Matsunaga Yūkei 松長有慶 and the modern Mount-Kōya scholarly tradition — extensive Japanese-language commentarial literature on the individual kaidai.

Other points of interest

The work is one of the earliest extant Japanese examples of the kaidai genre — a hermeneutic form Kūkai effectively introduced to Japan from his Tang Esoteric studies, and that became a staple of Shingon-school scriptural exegesis. The kaidai is not a line-by-line gloss but a self-contained programmatic exposition: it announces the doctrinal framework within which a sūtra is to be read, often without further engagement with the sūtra’s actual textual content. The genre therefore functions as a kind of doctrinal title-deed to the sūtra under exposition, claiming it for the Esoteric school. The strategy of re-reading a Mādhyamika prajñā title as the proper name of a Vajradhātu deity, exhibited in this text on the Vajracchedikā, is paradigmatic.

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