The Heart Sutra is
the most popular Sutra amongst the Prajnaparamita scripts in Buddhism.
It consists of only 262 characters in Chinese translation, however,
it summarizes the essence of the concept of emptiness expounded
in the great volume of Mahaprajnaparamita Sutra, from which the
Heart Sutra is extracted. There are many basic terms generally
used in the Buddhist doctrine, thus the Sutra is suitable as an
introduction to Buddhism by reciting it.
Apart from recitation
in its popularity, the Sutra is also commonly used in copying
scriptures as a religious Practice.