The Kitáb-i-Aqdas - The Most Holy Book
Index term: Hidden knowledge
k29.
Say: This is that hidden knowledge which shall never change, since its beginning is with nine, the symbol that betokeneth the concealed and manifest, the inviolable and unapproachably exalted Name. As for what We have appropriated to the children, this is a bounty conferred on them by God, that they may render thanks unto their Lord, the Compassionate, the Merciful. These, verily, are the Laws of God; transgress them not at the prompting of your base and selfish desires. Observe ye the injunctions laid upon you by Him Who is the Dawning-place of Utterance. The sincere among His servants will regard the precepts set forth by God as the Water of Life to the followers of every faith, and the Lamp of wisdom and loving providence to all the denizens of earth and heaven.
n48.
This is that hidden knowledge which shall never change, since its beginning is with nine
In the Arabic Bayán the Báb described His inheritance law as being "in accordance with a hidden knowledge in the Book of God -- a knowledge that shall never change or be replaced". He also stated that the numbers by which the division of the inheritance was expressed had been invested with a significance intended to aid in the recognition of Him Whom God will make manifest.
The "nine" mentioned here is represented in the Arabic text by the letter "Tá", which is its equivalent in the abjad notation (see Glossary). It is the first element of the Báb's division of inheritance, where He designates "nine parts" as the share of the children. The significance of nine lies in its being the numerical equivalent of the Greatest Name "Bahá", alluded to in the next part of this verse as "the concealed and manifest, the inviolable and unapproachably exalted Name". (See also note 33.)