Originally posted by Rooney9:read that Prajna Paramita Sutras 摩訶般若波羅蜜經 was expounded by Guanshi yin pusa to shariputra isnt it.
is this sutra exclusively to guanshi yin pusa?
No, the Prajna Paramita Sutras deal with the Perfection of Wisdoms that a bodhisattva practices to attain Buddhahood.
However, the "Heart Sutra" (般若波羅蜜心經) and the "Diamond Sutra", are both part of the Prajna Paramita Sutras which do not refer to a single sutra, but a whole class of them. The Heart Sutra is also considered a "condensed" form (ie synopsis) of the Prajna Paramita Sutras.