Generally speaking, all sūtras of Śākyamuni Buddha do not contain any lies because they all were preached to save all the people. When I restudy Buddhism however, it is clear that there is a difference between Great and Lesser Vehicles, expedient and true teachings, and exoteric and esoteric teachings although they are all words of Śākyamuni Buddha. This is clearly indicated in those sūtras and has been discussed by Buddhist scholars.

In essence, there are some doubts about the truth of the teachings preached by Śākyamuni Buddha during the first forty years of His fifty years of preaching. In the Muryō-gi-kyō (Sūtra of Infinite Meaning) Śākyamuni Buddha Himself declares: “I never preached the true teaching during the first forty years.” This means that all those sūtras preached before the Lotus Sūtra are expedient. He also says in the second chapter on “Expedients” in the Lotus Sūtra: “I, Śākyamuni Buddha, have simply discarded expedient teachings, and now preach only the unsurpassed way,” concluding definitely that the sūtras preached during the first forty some years are expedient.

Moreover, it is stated in the “Appearance of a Stupa of Treasure” chapter of the Lotus Sūtra that the Buddha of Many Treasures of the Treasure-Purity World appeared from underground attesting that the Lotus Sūtra preached by Śākyamuni Buddha is nothing but the truth, while various Buddhas in manifestation, gathered from all over the universe to attend the preaching of the Lotus Sūtra, sticking out their tongues to testify that not even one character of the Lotus Sūtra is a lie.

Gassui Gasho, A Letter on Menstruation, Nyonin Gosho, Letters Addressed to Female Followers, Page 28-30