how is it possible for him to believe in the hidden Inward reality (al-bāṭin al-maghmūd) and the unperceivable absent realm?

Therefore, whosoever's pointing is not directed toward the Sublime Essence—which manifested within the Muhammadan Dome (al-qubbah al-Muḥammadiyyah) through the hairline-receding Form (al-ṣūrah al-anza‘iyyah) named Ali, Prince of the Faithful, glorified is his glory—and whosoever does not recognize It through this manifestation and submit to It in servitude, then he is among the losers, and on the Day of Resurrection he shall be gathered with the faction of. Iblis; because everyone who worships an entity without recognizing it belongs to the faction of Iblis, according to the statement of our Master al-Sadiq, glorified is his glory:

“Whosoever claims that he has a God who cannot be recognized, then he has no God; and whosoever claims that he has a God who cannot be seen, then he has no Lord, and he is from the faction of Iblis.”

For this reason, everyone who says: "O Allah," yet does not recognize Allah through His seven essential manifestations by which He revealed Himself to creation,