The scripture commonly known as the *Sutra of Perfect Enlightenment* is transmitted and preserved in Chinese, and no Sanskrit original is known. Its standard Chinese title is 《圓覺經》, and the fuller title is 《大方廣圓覺修多羅了義經》. These titles are sometimes rendered into English as “Mahāvaipulya Sutra of Perfect Enlightenment” or “The Great Vaipulya Sūtra of Complete Enlightenment,” but such renderings are based on the Chinese text itself rather than on any extant Indic manuscript. In this sense, the text stands as a Chinese canonical work whose authority does not rest on a parallel Sanskrit witness.

Scholars generally regard the scripture as a composition in Chinese, rather than a translation from a lost Sanskrit source. Because no Sanskrit version has been found, any proposed Sanskrit title is necessarily a modern reconstruction and not an attested ancient name. What can be said with confidence is that its spiritual influence has flowed through the Chinese title and Chinese wording, shaping the Zen traditions that received it. The absence of a known Sanskrit original has not diminished its contemplative value; instead, it highlights how the Dharma can take root and flower fully within a particular linguistic and cultural soil.