Sherab Nyingpo Teaching by Geshe Lobsang Dawa Ep 1 The Heart Sūtra or Sherab Nyingpo (ཤེས་རབ་སྙིང་པོ་) is perhaps the most  popular Buddhist sūtra and certainly the sūtra most widely used and chanted in Tibet. Its full title in Sanskrit is  Bhagavatīprajñāpāramitāhṛdaya and in Tibetan  བཅོམ་ལྡན་འདས་མ་ཤེས་རབ་ཀྱི་ཕ་རོལ་ཏུ་ཕྱིན་པའི་སྙིང་པོ་ which translates as 'The Heart of the Blessed Perfection of Wisdom.' The followers of  Mahāyāna Buddhism consider it as a sacred literature which falls within  the category of the words of the Buddha. Thus, it is placed within the  Perfection of Wisdom (ཤེར་ཕྱྱིན་) section of the kangyur (བཀའ་འགྱུར་)  canon. According to the sūtra itself, the Heart Sūtra was taught by the  Buddha while he was on Vulture Peak, Rajagṛha with his monastic and  Bodhisattva followers. The Buddha entered a meditation state called  Profound Illumination and through his power made Śāriputra query  Avalokiteśvara about how a person engages in the practice of Perfection  of Wisdom. The main sūtra is the response Avalokiteśvara gives Śāriputra  instructing how a son or daughter of a noble family should view as  empty (སྟོང་པར་རྣམ་པར་བལྟ་བར་བྱ་) everything including form, sensation,  feelings, volitions, consciousness, the six sense faculties, the six  sense fields, the six consciousnesses, the twelve links of dependent  origination and the four nobles. He puts this in the formulaic phrase:  form is emptiness, emptiness is form, emptiness is no other than form and form is no other than emptiness.