From the various traditions of Amitayus (Buddha of long life) this mandala originates according to Vajrayana Buddhism from the Tantra literature and the Sanskrit text called the Arya-aparimitayurjnana-nama-mahayana-sutra. The primary goal and associated practice of this mandala is the accomplishment of complete enlightenment, long-life, life extension, and deathlessness. So seeing this mandala, hearing about it or remembering it will help it elongating one’s life.