About Eleven-Faced Avalokitesvara Heart Dharani Sutra

Bodhisattva Avalokiteshvara with Eleven Heads, gilt bronze with copper, gold, silver inlay and pigment, Tibet, 16th century
The Heart-dhāraṇī of Avalokiteśvara-ekadaśamukha Sūtra is a Buddhist text first translated from Sanskrit into Chinese on the 28th day of the third lunar month of 656 CE, by Xuanzang. The title in Tibetan language is Spyan-ras-gzigs-dbang-phyug-shal bcu-gcig-pa, while the Sanskrit title recovered from the Tibetan translation is Avalokiteśvara ikadaśamukha dhāraṇī. Alternatively, the sutra's title has been translated as the Eleven-Faced Avalokitesvara Heart Dharani Sutra by Professor Ryuichi Abe.