The Heart Sutra is the most widely known sutra of the Mahayana tradition of Tibetan Buddhism. It is part of the Prajnaparamita Sutras, which is a collection of about 40 sutras composed between 100 BCE and 500 CE. The Heart Sutra is a presentation of profound wisdom on the nature of emptiness.[1]
Although originally written in Chinese or Sanskrit, The Heart Sutra is presented here in its Tibetan and English translations.
Sources:[1] FMPT