Iman-Al-Mahdi Ahmad offered Jews the choice of either converting or being expelled to a hot barren land near Aden known as Mawza. The iman also closed all synagogues and prohibited public prayer by Jews. They were allowed to return one year later, though it is estimated that 2/3 of them did not survive the year. Upon their return, they found their homes occupied by Moslems. Many of the smaller communities disappeared and were not rebuilt. Among the exiles was Shalem (Shalom) Shabazi, who wrote over 550 historical, ethical and religious poems. He is considered the greatest Yemenite Jewish poet.