His intimate proclamation took place at the “Black Pit” (Siyahchal) of Tehran in 1853 when he was 36. His open proclamation occurred in Baghdad in the Najib Pasha garden later titled Ridvan Garden, at 3 in the afternoon of 21st April 1863.
He proclaimed his mission to the world by sending out tablets from Adrianpole to the Rulers of States, Kings, Emperors, Presidents and Religious Leaders during the year 1867 to 1873. The duration of his prophethood was 39 years during which he was exiled from Tehran to Baghdad (11 years), Constantinople (4 months), Adrianpole (5 years) and at last to the prison city of Acre in Palestine (25 years).
Over a hundred volumes were revealed from his pen, among which we can name Kitab-i-Aqdas (The Most Holy Book), The Hidden Words, Epistle to the Son of the Wolf, The tablets to the leaders of the world, Kitab-i-Iqan (The Book of Certitude, The Seven Valleys and The Four Valleys, many Tablets addressed to various believers, many prayers etc.
Hand of Cause of God
Secretary National Baha'i Council of India, 
