Great Compassion Dharani Sutra
Thousand-Handed and Thousand-Eyed Avalokitesvara Bodhisattva's Vast, Perfect, Unimpeded, Great-Compassionate Heart Dharani Sutra
Avalokitesvara Bodhisattva is also known as: Contemplator of the World's Sounds/Guan Shi Yin/Guan Zi Zai Bodhisattva
Translated during the Tang Dynasty by Shramana Bhagavat-dharma from west India.
http://www.buddhism.org/Sutras/2/Sutras17.htm