Honmon no Daimoku': The Nichiren chant of belief (信の題目) is to believe Honmon Kaidan Dai-Gohonzon, and the Nichiren chant of practice (行の題目) is to recite Namu Myohorenge-kyo by oneself and recommend it to other people.
「本門の題目」：信の題目は本門戒壇大御本尊を信じること、行の題目は南無妙法蓮華経と我も唱え、人にも勧めること。