By what was XXX replaced?
Ali Shamshuddin
Ali Shamshuddin Bin Ibrahim (d. November 13, 1345 or 18 Rajabul Asab 746, in Hamadan, Yemen) was the 13th Dai of Taiyabi Musta``lī Bohra Islam. He succeeded the 12th Dai, Mohammed Bin Hatim, to the religious post. Shamshuddin became Da'i al-Mutlaq in 729 AH (1345 AD). His period of Dawat was from 729-746 AH (1329-1345 AD) for about 16 years and 7 months. Ali Shamshuddin was succeeded by 14th Dai Syedna Abdul Muttalib who was his Mazoon (Associate).