Namaste

I attended a ZEN workshop on ‚Hannya Shingyo‘ (heart) sutra.
http://www.zen-deshimaru.com/en/zen/...yo-heart-sutra
https://www.youtube.com/watch?v=P8ajU3syci4

It was said that it was composed in Sanskrit and translated into Chinese and Japanese. Thus I think it must be Hindu origin, bacause, as far as I know, Buddha spoke Pali, not Sanskrit.

How is this sutra called in Hinduism?

Thanks