Muhammad, the Apostle of God, cried out from the midmost heart of Paradise,

This is the Day whereon Muhammad, the Apostle of God, cried out from the midmost heart of Paradise, saying: “O peoples of the earth! By God, the Beloved of the worlds and the Desire of every understanding heart is come! He, verily, is the One to Whose voice I hearkened on My Night Journey but Whose beauty I was not to behold until the days attained their consummation in this Day, a Day which is the adornment of all the days of God, the Sovereign Lord, the Almighty, the All-Praised.”

- Days of Remembrance (Selections from the Writings of Bahá’u’lláh for Bahá’í Holy Days)

http://www.bahai.org/library/authoritative-texts/bahaullah/days-remembrance/days-remembrance.docx?fa27a24c