The Kitáb-i-Aqdas - The Most Holy Book
Index term: Adrianople
Whoso layeth claim to a Revelation direct from God, ere the expiration of a full thousand years, such a man is assuredly a lying impostor. We pray God that He may graciously assist him to retract and repudiate such claim. Should he repent, God will, no doubt, forgive him. If, however, he persisteth in his error, God will, assuredly, send down one who will deal mercilessly with him. Terrible, indeed, is God in punishing! Whosoever interpreteth this verse otherwise than its obvious meaning is deprived of the Spirit of God and of His mercy which encompasseth all created things. Fear God, and follow not your idle fancies. Nay, rather, follow the bidding of your Lord, the Almighty, the All-Wise. Erelong shall clamorous voices be raised in most lands. Shun them, O My people, and follow not the iniquitous and evil-hearted. This is that of which We gave you forewarning when We were dwelling in 'Iráq, then later while in the Land of Mystery, and now from this Resplendent Spot.
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).
This is that of which We gave you forewarning when We were dwelling in 'Iráq, then later while in the Land of Mystery, and now from this Resplendent Spot.
The "Land of Mystery" refers to Adrianople, and "this Resplendent Spot" is a reference to 'Akká.
O source of perversion!
This is a reference to Mírzá Yahyá, known as Subh-i-Azal (Morning of Eternity), a younger half-brother of Bahá'u'lláh, who arose against Him and opposed His Cause. Mírzá Yahyá was nominated by the Báb to serve as a figure-head for the Bábí community pending the imminent manifestation of the Promised One. At the instigation of Siyyid Muhammad-i-Isfahání (see note 192), Mírzá Yahyá betrayed the trust of the Báb, claimed to be His successor, and intrigued against Bahá'u'lláh, even attempting to have Him murdered. When Bahá'u'lláh formally declared His Mission to him in Adrianople, Mírzá Yahyá responded by going to the length of putting forward his own claim to be the recipient of an independent Revelation. His pretensions were eventually rejected by all but a few, who became known as Azalís (see note 177). He is described by Shoghi Effendi as the "Arch-Breaker of the Covenant of the Báb" (see God Passes By, chapter X).
Question: Concerning inheritance.
Answer: Regarding inheritance, that which the Primal Point hath ordained -- may the souls of all else but Him be offered up for His sake -- is well pleasing. The existing heirs should receive their allotted shares of the inheritance, while a statement of the remainder must be submitted to the Court of the Most High. In His hand is the source of authority; He ordaineth as He pleaseth. In this regard, a law was revealed in the Land of Mystery [Adrianople], temporarily awarding the missing heirs' inheritance to the existing heirs until such time as the House of Justice shall be established, when the decree concerning this will be promulgated. The inheritance, however, of those who emigrated in the same year as the Ancient Beauty, hath been awarded to their heirs, and this is a bounty of God bestowed upon them.