book asiyih khanum the most exalted leaf blueridge bah&aacute; &iacute; cluster a biographical essay of the wife of bah&aacute; u ll&aacute;h the founder of the bah&aacute; &iacute; faith and mother of abdu l bah&aacute; the centre of bah&aacute; u ll&aacute;h s covenant