Regarding the “Dalá’il-i-Sab‘ih,” [Seven Proofs] Nicolas writes as follows: “‘The Book of Seven Proofs’ is the most important of the polemical works from the pen of Siyyid ‘Alí-Muḥammad, dit le Báb.” (Preface, page 1.)
“His correspondent evidently asked him for the proofs of his mission and his answer is admirable for its precision and clearness. It rests upon two verses of the Qur’án; according to the first, no one can reveal verses even though assisted by the entire world of men and evil spirits; according to the second, no one can understand the meaning of the verses of the Qur’án except God, and men of solid learning.”
- A. L. M. Nicolas (Preface, p. 5.; Le Livre des Sept Preuves,” by A. L. M. Nicolas; Footnotes to chapter 13 provided by Shoghi Effendi)