Toh 2510An Explanation of the Tantra called “The Compendium of the Suchness of All the Tathāgatas, The Clear Realization of the Great Vehicle,” called “Illuminating Suchness”
Pāli / Sanskrit:Sarvatathāgatatattvasaṃgrahamahāyānābhisamayanāmatantravyākhyātattvālokakarīnāma
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Explanation of “Tattvāloka”: The Scripture Explaining the Compendium of the Suchness of All the Tathagatas
Context
This scripture is a tantric instruction belonging to the Vajrayana tradition, found in the Kangyur, the collection of tantric scriptures of Tibetan Buddhism. The original title is “Tattvālokakarikā,” Verses Illuminating Suchness. It is a detailed explanation (vyākhyā) of the Sarvatathāgatatattvasaṃgraha, a key essential point in the higher tantric system.
The scripture explains the “Compendium of the Suchness of All the Tathagatas,” a central concept in the Method of Completion (Anuttarayoga Tantra). It is not a merely theoretical scripture, but a work teaching the nature of reality (tattva) through the light of wisdom (āloka) of the Buddha and the advanced bodhisattvas. This work was transmitted in the context of esoteric practice, where students had received Tangkhrom (dạo quán khóa thâu) and were ready to receive the most profound teachings.
Main Content
The heart of this teaching lies in the recognition that all Tathagatas differ in form but are identical in essence (tattva). Suchness is not bland or empty of vitality, but the all-encompassing luminosity of the wisdom of the dharmadhatu (Dharmakāya), the absolute ground of phenomena.
The scripture explains that, through the Secret Treasury of Vajrayana, the practitioner can draw upon these defining seeds. The Tathagatas, from Akṣobhya Buddha to Amitābha Buddha, are all manifestations of the same Suchness, merged in the boundless lotus essence of the Dharmakāya. “Illuminating Suchness” (Tattvāloka) is precisely the awakening to this identity.
The scripture emphasizes that this understanding cannot be attained through crude reasoning (prajñapti). Instead, it requires direct experience through Comprehensive Visualization (sādhana viṣaya), where the practitioner visualizes the principal chosen deity (Iśṭadevatā) as a manifestation of that Suchness.
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