"Kanjin Honzon Sho" (Spiritual Contemplation and the Most Venerable One) also shows 'The two laws of Ingyo and Katoku by Sakyamuni put armors on five characters of 妙法蓮華経 ('Myohorenge-kyo).'
また『観心本尊抄』でも「釈尊の因行果徳の二法は法華経の五字に具足す。」