翻譯名義集 5.59

5.59

[Katadhaguṇa (?)] In Qin it means "what benefit is obtained at the boundary of this matter?". In the Pañcaviṃśatisāhasrikā-prajñāpāramitā Sūtra, as for the ta-syllable gate, it is because one enters into the ungraspability of the existence of all phenomena. The Śāstra says: "One immediately knows what benefit is obtained at the boundary of all phenomena." In the Avataṃsaka Sūtra, when intoning the syllable sta (su-he for s-, and rising tone for ta), it is called dispelling all obstacles of affliction and opening pure light. The Commentary says: "Namely, the nature of upholding the possible and the impossible, making them unshakeable."