Maha-Stamaprapta Bodhisattva's Preachment on Being Mindful of the Buddha
The Three Sages of the Western Pure Land
Maha-Stamaprapta Bodhisattva is one of the Two Great Bodhisattvas in Western Pure Land, besides Avalokiteshvara Bodhisattva. Maha-Stamaprapta Bodhisattva (大勢至菩薩) is the Bodhisattva on the left of Amitabha Buddha. This Great Bodhisattva has taught us how to be mindful of the Buddha in a short passage called "Maha-Stamaprapta Bodhisattva's Preachment on Being Mindful of the Buddha" (大勢至菩薩念佛圓通章).
Below is a short animated cartoon describing it. I hope this will benefit you and all who see it.Namo Maha-Stamaprapta Bodhisattvaya Mahasattvaya...