One prominent Buddhist story tells of Avalokitevara vowing never to rest until he had freed all sentient beings from sasra. Despite strenuous effort, he realizes that still many unhappy beings were yet to be saved. After struggling to comprehend the needs of so many, his head splits into eleven pieces. Amitbha, seeing his plight, gives him eleven heads with which to hear the cries of the suffering. Upon hearing these cries and comprehending them, Avalokitevara attempts to reach out to all those who needed aid, but found that his two arms shattered into pieces. Once more, Amitbha comes to his aid and invests him with a thousand arms with which to aid the suffering multitudes.