The triad with Amida seated at the center and the other two kneeling down on both sides is a form of Raigo, which means inviting the dead spirits to heaven. The left Bodhisattvas Kannon in this triad usually has a rendai, a lotus-flower-shaped pedestal to carry the dead.
中尊は坐像、脇侍は跪坐とするものは来迎形式の阿弥陀三尊像であり、この場合、左脇侍の観音菩薩は往生者を迎え取るための蓮台を捧げ持つのが普通である。