Lay followers of Japan today should recite only “Namu Myōhō Renge Kyō.” As the name has the virtue of reaching the body for which it stands, when one chants “Namu Myōhō Renge Kyō” one will not fail to receive all the merit of the Lotus Sūtra.
Jisshō-shō, A Treatise on the Ten Chapters of the Great Concentration and Insight