Hasan Badruddin (17th Dai)
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Syedna Hasan Badruddin was 17 the Dai of Taiyabi Musta‘lī Bohra Islam(Death: 6 Shawwal, 821 AH / 5 Nov, 1418AD, Zimarmar-Yemen). He succeeded the 16th Dai Syedna Abdullah Fakhruddin to the religious post.
The grave of the dai along with 14th and 16th Dai ( big square platform) are at Zimarmar Fort which is on the top of hill. The small square is grave of their associate (mazoon). On the hill top there still exist remains of Mosque, buildings and water reservoirs.
Hasan Badruddin became Da'i al-Mutlaq in 809AH  /1345AD. His period of Dawat was from 809-821AH (1406-1418 AD) for about 12 years (Hijri), 27 days.
His Mawazeen: Syedi Abdul Muttalib Najmuddin, Al Maula Mohammad bin Idris Mukasir: Syedi Ahmad bin Syedna Abdullah
Syedna conferred nass upon 18th Dai Syedna Ali Shamshuddin Bin Abdullah.
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