A survey of Baha'i history ...
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Quddús was twenty-two years old when he recognized the Báb
The last, but in rank the first, of these Letters to be
inscribed on the Preserved Tablet was the erudite, the twenty-two year old
Quddús, a direct descendant of the Imám Hasan and the most esteemed disciple of
Siyyid Kázim. (Shoghi Effendi, ‘God Passes By’)