From: Baha'i Calendar - this month in history
Subhanika-Ya-Hu:
A beautiful tablet in Arabic and in Bahá'u'lláh's own hand was revealed in
Constantinople on the eve of the 5th of Jamadiyu'l-Avval 1280 A.H. (19 October
1863), the anniversary of the Declaration of the Báb.[1] This Tablet, because
of its opening verse, is known as Lawh-i-Naqus (Tablet of the Bell) and is also
referred to as the Subhanika-Ya-Hu. It was revealed following a request made
through 'Abdu'l-Bahá by one of Bahá'u'lláh's companions, Aqa
Muhammad-'Ally-i-Tambaku-Furush-i-Isfahani. The revelation of this Tablet on
such an auspicious occasion brought immense joy to the hearts of those who were
celebrating that historic festival. Bahá'u'lláh opens this Tablet with these
words:
“O Monk of the Incomparable One! Ring out the Bell, inasmuch
as the Day of the Lord hath shone forth and the Beauty of the All-Glorious is
established upon His holy and resplendent Throne.”
(Adib Taherzadeh, The Revelation of Baha'u'llah v 2, p. 19)
[1]
The Declaration of the Báb was on the evening of 5 Jamadiyu'l-Avval, 1260 A.H.
(22 May 1844), but at present in the East, the anniversary of this festival is
celebrated.