There is no doubt that the Heart Sutra is the most frequently used and recited text in the entire Mahayana Buddhist tradition, which still flourishes in Japan, Korea, Vietnam, Tibet, Mongolia, Bhutan, China, parts of India and Nepal, and, more recently, also in the Americas and Europe. Many people have said many different things about what the Heart Sutra is and what it is not, such as being the heart of wisdom, a statement of how things truly are, the key teaching of the Mahayana, a condensation of all the Prajnaparamita Sutras (the Buddha’s second turning of the wheel of dharma), or an explanation of emptiness in a nutshell. In order to understand the actual words of the Heart Sutra, it’s helpful to first explore its background within the Buddhist tradition as well as the meanings of “prajnaparamita” and “emptiness.”
One thing we can safely say about the Heart Sutra is that it is completely crazy...
The Heart Sutra Will Change You Forever - Lion's Roar