al-Hadi 1 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | L VIII |
| Dates | 785 (taq) / 786 (ob.) |
| PmbZ No. | 5193 |
| Variant Names | Moses; Musa; Mws' |
| Religion | Muslim |
| Ethnicity | Arab |
| Locations | Syria |
| Titles | Caliph (office) |
| Textual Sources | Chronicon Anonymi ad annum 1234 pertinens, ed. and tr. J.-B. Chabot, I = CSCO 81-82 (Paris, 1916-20), II = CSCO 109 (Louvain, 1937) (chronicle); Theophanes Confessor, Chronographia, ed. C. de Boor, 2 vols. (Leipzig, 1883-85, repr. Hildesheim/NewYork, 1980); tr. and comm. C. Mango and R. Scott, The Chronicle of Theophanes Confessor, Oxford 1997 (chronicle) |
Al-Hadi 1 was called Moses, Theophanes; Musa, Chron. 1234. He was a son of al-Mahdi 1 and succeeded to the caliphate in 785 on his father's death: Theoph. AM 6276 (καὶ ὁ τῶν Ἀράβων ἀρχηγὸς Μαδί, ὁ καὶ Μουάμεδ, τέθνηκεν, καὶ ἐκράτησε Μωσῆς, ὁ υἱὸς αὐτοῦ), Chron. 1234, §186 ("and his son Musa reigned after him"). He was caliph from 785 to 786. He died in 786 and was succeeded by his brother Aaron (Harun 1): Theoph. AM 6278 (Μωσῆς, ὁ τῶν Ἀράβων ἀρχηγός, τέθνηκεν, καὶ ἐκράτησεν Ἀαρών, ὁ ἀδελφὸς αὐτοῦ, ἀντ'αὐτοῦ τὴν ἀρχήν), Chron. 1234, §187 ("after one year Musa the son of Mahdi died, and his brother Harun began to reign").
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