In Hokke-shu (the Hokke school of Buddhism), Shaka Nyorai (Buddha Shakamuni) and Taho Nyorai (Buddha of Many Treasures) are worshipped as the principal images who flank each other, in accordance with the story of Ken Hotohon Dai-juichi of "Myo Horengekyo" (the 'Lotus Sutra' Chapter Eleven: the Emergence of the Treasure Tower).
法華宗では、「妙法蓮華経」見宝塔品第十一に基づき釈迦如来・多宝如来を脇士として本尊とする。