 The Fatimids represented one of the apogees of Muslim culture, being patrons of the arts, architecture, literature, pluralism and scientific endeavors, all fields that were equally dear to the Aga Khan III and Om Habibeh.Immediately after her husband's death, she oversaw the building of a mausoleum, a task that took 16 months and the help of architect Farid El-Shafie and contractor Hassan Dorra.When the Aga Khan III appointed his grandson, Karim, to succeed him to the title of Aga Khan IV, he also indicated in his will that he desired Begum Om Habibeh to offer her wise counsel during the first seven years of the Imamat of Karim Aga Khan IV.