In Pure Land Buddhism, Guanyin (or Guan Shi Yin) is seen on the right of Amitābha. The literal meaning of Guan Shi Yin is “[The One Who] Perceives the Sounds of the World” or “Looking on or hearing the voices of the suffering”.
The Buddha told Inexhaustible Intention Bodhisattva, “Good man, if any of the limitless hundreds of thousands of myriads of kotis of living beings who are undergoing all kinds of sufferings hear of Guanshiyin Bodhisattva and recite his name single-mindedly, Guanshiyin Bodhisattva will immediately hear their voices and rescue them.”
“If a person who upholds the name of Guanshiyin Bodhisattva enters a great fire, the fire will not burn him, all because of this Bodhisattva’s awesome spiritual power.”
“If a person being tossed about in the great sea calls out the Bodhisattva’s name, he will find a shallow place.”