Nam – Myoho – Renge – Kyo
All the living beings of the six paths and the four forms of birth are
our fathers and mothers. Therefore, as long as Shakyamuni was unable
to treat them all with filial devotion, he refrained from becoming a
Buddha...The Buddha became enlightened to the Lotus Sutra, and as a
result of the filial devotion that he showed to the mothers and
fathers...his person was endowed with blessings.
Letter to Horen;
MWND, Vol. 7, p. 103
Nam – Myoho – Renge – Kyo