The raigo-zu is based on the "Kanmuryoju-kyo sutra "('The Sutra of Visualization of the Buddha of Measureless Life,' meaning Amida), as is seen in Taima mandala, since the kuhon ojo (nine levels of birth in the Pure Land) from jobon josho to gebon gesho, the way raigo is painted, varies with each level of birth in the Pure Land.
『観無量寿経』に基づいた来迎図では、当麻曼荼羅に見られるように、上品上生から下品下生までの九品往生に分かれるため、来迎の様も、それぞれ異なって描き分けられている。