The Kitáb-i-Aqdas - The Most Holy Book
Index term: Hadith
n23.
Say: God hath made My hidden love the key to the Treasure
There is a well-known Islamic tradition concerning God and His creation:

I was a Hidden Treasure. I wished to be made known, and thus I called creation into being in order that I might be known.

References and allusions to this tradition are found throughout the Bahá'í Writings. For example, in one of His prayers, Bahá'u'lláh reveals:

Lauded be Thy name, O Lord my God! I testify that Thou wast a hidden Treasure wrapped within Thine immemorial Being and an impenetrable Mystery enshrined in Thine own Essence. Wishing to reveal Thyself, Thou didst call into being the Greater and the Lesser Worlds, and didst choose Man above all Thy creatures, and didst make Him a sign of both of these worlds, O Thou Who art our Lord, the Most Compassionate!
Thou didst raise Him up to occupy Thy throne before all the people of Thy creation. Thou didst enable Him to unravel Thy mysteries, and to shine with the lights of Thine inspiration and Thy Revelation, and to manifest Thy names and Thine attributes. Through Him Thou didst adorn the preamble of the book of Thy creation, O Thou Who art the Ruler of the universe Thou hast fashioned! (Prayers and Meditations by Bahá'u'lláh, XXXVIII)


Likewise, in the Hidden Words, He states:

O Son of Man! I loved thy creation, hence I created thee. Wherefore, do thou love Me, that I may name thy name and fill thy soul with the spirit of life.

'Abdu'l-Bahá, in His commentary on the above-cited tradition, wrote:

O wayfarer in the path of the Beloved! Know thou that the main purpose of this holy tradition is to make mention of the stages of God's concealment and manifestation within the Embodiments of Truth, They who are the Dawning-places of His All-Glorious Being. For example, before the flame of the undying Fire is lit and manifest, it existeth by itself within itself in the hidden identity of the universal Manifestations, and this is the stage of the "Hidden Treasure". And when the blessed Tree is kindled by itself within itself, and that Divine Fire burneth by its essence within its essence, this is the stage of "I wished to be made known". And when it shineth forth from the Horizon of the universe with infinite Divine Names and Attributes upon the contingent and placeless worlds, this constituteth the emergence of a new and wondrous creation which correspondeth to the stage of "Thus I called creation into being". And when the sanctified souls rend asunder the veils of all earthly attachments and worldly conditions, and hasten to the stage of gazing on the beauty of the Divine Presence and are honoured by recognizing the Manifestation and are able to witness the splendour of God's Most Great Sign in their hearts, then will the purpose of creation, which is the knowledge of Him Who is the Eternal Truth, become manifest.
n33.
It hath been ordained that every believer in God . . . shall, each day . . . repeat
"Alláh-u-Abhá" is an Arabic phrase meaning "God the All-Glorious". It is a form of the Greatest Name of God (see note 137). In Islám there is a tradition that among the many names of God, one was the greatest; however, the identity of this Greatest Name was hidden. Bahá'u'lláh has confirmed that the Greatest Name is "Bahá".
The various derivatives of the word "Bahá" are also regarded as the Greatest Name. Shoghi Effendi's secretary writing on his behalf explains that

The Greatest Name is the Name of Bahá'u'lláh. "Yá Bahá'u'l-Abhá" is an invocation meaning: "O Thou Glory of Glories!". "Alláh-u-Abhá" is a greeting which means: "God the All-Glorious". Both refer to Bahá'u'lláh. By Greatest Name is meant that Bahá'u'lláh has appeared in God's Greatest Name, in other words, that He is the supreme Manifestation of God.

The greeting "Alláh-u-Abhá" was adopted during the period of Bahá'u'lláh's exile in Adrianople.
The repetition of "Alláh-u-Abhá" ninety-five times is to be preceded by the performance of ablutions (see note 34).
n72.
Whoso wisheth to make use of vessels of silver and gold is at liberty to do so.
In the Bayán the Báb allowed the use of gold and silver utensils, thus abrogating the Islamic condemnation of their use which stems not from an explicit injunction of the Qur'án but from Muslim traditions. Bahá'u'lláh here confirms the Báb's ruling.
n129.
the Mother Book
The term "Mother Book" is generally used to designate the central Book of a religious Dispensation. In the Qur'án and Islamic Hadíth, the term is used to describe the Qur'án itself. In the Bábí Dispensation, the Bayán is the Mother Book, and the Kitáb-i-Aqdas is the Mother Book of the Dispensation of Bahá'u'lláh. Further, the Guardian in a letter written on his behalf has stated that this concept can also be used as a "collective term indicating the body of the Teachings revealed by Bahá'u'lláh". This term is also used in a broader sense to signify the Divine Repository of Revelation.