| Hebatullah-il-Muʾayyad Fiddeen | |
| Native Name: | هِبَةُاللهِ المؤيد في الدّين |
| Honorific Suffix: | 40th Da'i al-Mutlaq of the Dawoodi Bohra |
| Image Upright: | 1.2 |
| Birth Date: | 1713 AD |
| Death Date: | 1779 AD |
| Resting Place: | Ujjain, India |
| Office1: | Da'i al-Mutlaq |
| Term Start1: | 1756 AD (1168 AH) |
| Term End1: | 1780 AD (1200 AH) |
| Predecessor1: | Ibrahim Wajiuddin |
| Successor1: | Abduttayyeb Zakiuddin III |
| Father: | Ibrahim Wajiuddin |
| Religion: | Islam |
| Sect: | Isma'ili |
| Subsect: | Dawoodi Bohra |
| Background: |
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| Children: |
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Syedna Hebatullah-il-Muʾayyad Fiddeen bin Syedna Ibrahim Wajihuddin (Died: 1st Shaban 1193 AH (13 August 1779 AD)) was the 40th Dā'ī al-Mutlaq of the Dawoodi Bohra sect.[1] He succeeded his father, the 39th Dā'ī al-Mutlaq, Syedna Ibrahim Wajihuddin to the religious post.
Syedna Hebatullah was born in 1713 AD and was educated by his father Syedna Ibrahim Wajihuddin. He became Dā'ī in 1756 AD (1168 AH) at the age of 43.[2] His period of Da'wat was from then until his death at the age of 68 (1780 AD (1200 AH)).
During his tenure, a group of dissidents called Hebtiyas emerged led by Ismail bin Abdur-Rasool and supported by Ismail's son Hebatullah.
Syedna Hebatullah-il-Muʾayyad had two sons; Syedi Shamsuddin and Syedi Qamruddin. Syedi Shamsuddin married the daughter of Syedi Khan and Syedi Qamruddin married daughter of MiyaSaheb Yusuf bin Faizullah.
Muʾayyad Fiddeen's deputies were:
Syedna Abduttayyeb Zakiuddin succeeded Syedna Hebatullah-il-Muʾayyad Fiddeen as the 41st Da'i al-Mutlaq in 1780 AD (1200 AH).