Queen Pure Virtue mentioned in chapter 27, “King Wonderful Adornment,” of the Lotus Sūtra allowed her two sons to leave home and become priests to spread the Lotus Sūtra. The daughter of a Dragon King vowed to “expound the Mahāyāna teachings of the Lotus Sūtra and to save all living beings from suffering.” They did not vow to practice only the sūtras other than the Lotus and not to practice the Lotus Sūtra. However, women today practice nothing but these other sūtras, not knowing how to practice the Lotus Sūtra. It is best for them to promptly change their minds and devote themselves to the faith and practice of the Lotus Sūtra. Namu Myōhō Renge Kyō. Namu Myōhō Renge Kyō.
Hokke Daimoku Shō, Treatise on the Daimoku of the Lotus Sūtra, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 48