The Heart Sūtra ( or , ) is a popular sutra in Mahāyāna Buddhism. In Sanskrit, the title translates as "The Heart of the Perfection of Wisdom".
The Sutra famously states, "Form is emptiness (śūnyatā), emptiness is form." It is a condensed exposition on the Buddhist Mahayana teaching of the Two Truths doctrine, which says that ultimately all phenomena are Śūnyatā (emptiness).
It has been called "the most frequently used and recited text in the entire Mahayana Buddhist tradition." The text has been translated into English dozens of times from Chinese, Sanskrit, and Tibetan, as well as other source languages.
Summary of the sutra
In the sutra, Avalokiteśvara addresses Śariputra, explaining the fundamental emptiness (śūnyatā) of all phenomena, known through and as the five aggregates of human existence (skandhas): form (rūpa), feeling (vedanā), volitions (saṅkhāra), perceptions (saṃjñā), and consciousness (vijñāna). Avalokiteśvara famously states, "Form is Emptiness (śūnyatā). Emptiness is Form", and declares the other skandhas to be equally empty—that is, dependently originated.
Avalokiteśvara then goes through some of the most fundamental Buddhist teachings, such as the Four Noble Truths, and explains that in emptiness, none of these notions apply. This is interpreted according to the two truths doctrine as saying that teachings, while accurate descriptions of conventional truth, are mere statements about reality—they are not reality itself—and that they are therefore not applicable to the ultimate truth that is by definition beyond mental understanding. Thus the bodhisattva, as the archetypal Mahayana Buddhist, relies on the perfection of wisdom, defined in the Mahāprajñāpāramitā Sūtra to be the wisdom that perceives reality directly without conceptual attachment, thereby achieving nirvana.
The sutra concludes with the mantra , meaning "gone, gone, everyone gone to the other shore, awakening, svaha."
Popularity and stature
The Heart Sutra is "the single most commonly recited, copied, and studied scripture in East Asian Buddhism." It is recited by adherents of Mahayana schools of Buddhism regardless of sectarian affiliation with the exception of Shin Buddhists and Nichiren Buddhists.
While the origin of the sutra is disputed by some modern scholars, it was widely known throughout South Asia (including Afghanistan) from at least the Pala Empire period (–1200 CE) and in parts of India until at least the middle of the 14th century. The stature of the Heart Sutra throughout early medieval India can be seen from its title 'Holy Mother of all Buddhas Heart of the Perfection of Wisdom' dating from at least the 8th century CE (see Philological explanation of the text).
The long version of the Heart Sutra is extensively studied by the various Tibetan Buddhist schools, where the Heart Sutra is chanted, but also treated as a tantric text, with a tantric ceremony associated with it. It is also viewed as one of the daughter sutras of the Prajnaparamita genre in the Vajrayana tradition as passed down from Tibet.
The text has been translated into many languages, and dozens of English translations and commentaries have been published, along with an unknown number of informal versions on the internet.
Versions
There are two main versions of the Heart Sutra: a short version and a long version.
The short version as translated by Xuanzang is the most popular version of adherents practicing East Asian schools of Buddhism. Xuanzang's canonical text (T. 251) has a total of 260 Chinese characters. Some Japanese and Korean versions have an additional 2 characters. The short version has also been translated into Tibetan but it is not part of the current Tibetan Buddhist Canon.
The long version differs from the short version by including both an introductory and concluding section, features that most Buddhist sutras have. The introduction introduces the sutra to the listener with the traditional Buddhist opening phrase "Thus have I heard". It then describes the venue in which the Buddha (or sometimes bodhisattvas, etc.) promulgate the teaching and the audience to whom the teaching is given. The concluding section ends the sutra with thanks and praises to the Buddha.
Both versions are chanted on a daily basis by adherents of practically all schools of East Asian Buddhism and by some adherents of Tibetan and Newar Buddhism.