The Heart Sūtra, belonging to the Perfection of Wisdom (Prajñāpāramitā) category of Mahāyāna Buddhism literature along with the Diamond Sūtra, is perhaps the most prominent representative of the genre. Go through the video below and further the explanation is given below the video. We listen to it every day as it harmonises the environment.
The Heart Sūtra is made up of 14 shlokas in Sanskrit, with each shloka containing 32 syllables. In the standard Chinese translation by Xuanzang, it has 260 Chinese characters. In English it is composed of sixteen sentences. This makes it the shortest text in the Perfection of Wisdom genre, which contains scriptures in lengths up to 100,000 shlokas. According to Buddhist scholar and author Geshe Kelsang Gyatso in his commentary to the Heart Sūtra:
The Essence of Wisdom Sutra (Heart Sūtra) is much shorter than the other Perfection of Wisdom sūtras but it contains explicitly or implicitly the entire meaning of the longer Sutras.
The Chinese version is frequently chanted (in the local pronunciation) by the Chan (Zen/Seon/Thiền) school during ceremonies in China, Japan, Korea, and Vietnam respectively. It is also significant to the Shingon Buddhist school in Japan, whose founder Kūkai wrote a commentary on it, and to the various Tibetan Buddhist schools, where it is studied extensively.
The sūtra is in a small class of sūtras not attributed to the Buddha. In some versions of the text, starting with that of Fayue dating to about 735, the Buddha confirms and praises the words of Avalokiteśvara, although this is not included in the preeminent Chinese version translated by Xuanzang. The Tibetan canon uses the longer version, although Tibetan translations without the framing text have been found at Dunhuang. The Chinese Buddhist canon includes both long and short versions, and both versions exist in Sanskrit.
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