"It is related in the ` Biharu'l-Anvar,' the ` Avalim,' and the ` Yanbu" of Sadiq, son of Muhammad, that he spoke these words: `Knowledge is seven and twenty letters. All that the Prophets have revealed are two letters thereof. None thus far hath known any besides these two letters. But when the Qa'im shall arise, He will cause the remaining five and twenty letters to be made manifest.' Consider: he hath declared Knowledge to consist of seven and twenty letters, and regarded all the Prophets, from Adam even unto the `Seal,' as Expounders of only two letters thereof, and as having been sent down with these two letters. He also saith that the Qa'im will reveal all the remaining five and twenty letters. Behold from this utterance how great and lofty is His station. His rank excelleth that of all the Prophets, and His Revelation transcendeth the comprehension and understanding of all their chosen ones." ("The Kitab-i-Iqan," p. 205.)