The true doctrine of the “attainment of Buddhahood with the present body,” after all, has to be based on the Lotus Sūtra that reveals both doctrines of attainment of Buddhahood by men of the Two Vehicles and attainment of Buddhahood by Śākyamuni Buddha in the eternal past.

Grand Master T’ien-t’ai spoke of the “attainment of Buddhahood with the present body” doctrine, “This is kept secret and has not been revealed in provisional sūtras.” It means that the true doctrine of the “attainment of Buddhahood with the present body” is like an ambrosial scent of a chinaberry that cleanses all other sundry odors.

Ōta-dono Nyōbō Gohenji, A Response to the Wife of Lord Ōta, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 170

===