"To him was given to drink the incorruptible waters of the river of knowledge ..."

"For instance, the Qur’án was an impregnable stronghold unto the people of Muḥammad. In His days, whosoever entered therein, was shielded from the devilish assaults, the menacing darts, the soul-devouring doubts, and blasphemous whisperings of the enemy. Upon him was also bestowed a portion of the everlasting and goodly fruits—the fruits of wisdom, from the divine Tree. To him was given to drink the incorruptible waters of the river of knowledge, and to taste the wine of the mysteries of divine Unity.

All the things that people required in connection with the Revelation of Muḥammad and His laws were to be found revealed and manifest in that Riḍván of resplendent glory. That Book constitutes an abiding testimony to its people after Muḥammad, inasmuch as its decrees are indisputable, and its promise unfailing. All have been enjoined to follow the precepts of that Book until “the year sixty” 1 —the year of the advent of God’s wondrous Manifestation. That Book is the Book which unfailingly leadeth the seeker unto the Riḍván of the divine Presence, and causeth him that hath forsaken his country and is treading the seeker’s path to enter the Tabernacle of everlasting reunion. Its guidance can never err, its testimony no other testimony can excel. All other traditions, all other books and records, are bereft of such distinction, inasmuch as both the traditions and they that have spoken them are confirmed and proven solely by the text of that Book. Moreover, the traditions themselves grievously differ, and their obscurities are manifold.

Muḥammad, Himself, as the end of His mission drew nigh, spoke these words: “Verily, I leave amongst you My twin weighty testimonies: The Book of God and My Family.” Although many traditions had been revealed by that Source of Prophethood and Mine of divine Guidance, yet He mentioned only that Book, thereby appointing it as the mightiest instrument and surest testimony for the seekers; a guide for the people until the Day of Resurrection."

-Bahá'u'lláh, The Kitáb-i-Íqán, pp. 200-202

1.The year 1260 A.H., the year of the Báb’s Declaration (1844)