After allegedly performing this action, Lij Iyasu was deposed as emperor of Ethiopia in favor of his aunt Zewditu. Yahya of Yemen mandated this action as part of the Orphans' Decree. After marrying the daughter of a king of Pasai, Parameswara of Singapura performed this action and established a state at Malacca. (10[1])Jean-Bédel Bokassa underwent this action in a failed (10[1])attempt to solicit (-5[1])more aid from the Libyan government. (10[1])The mystic (10[1])Sabbatai Zevi performed this action when given the choice between it or dying. To justify refusing to perform this action, Vladimir the Great claimed that "drinking (10[1])is the (10[1])joy of all Rus'." (-5[1])One incentive for this action was to avoid (10[1])paying the jizya (10[1])tax. For 10 points, name this action that entails adhering to a religion founded by the Prophet Muhammad. ■END■ (10[1])