Al-Hadi
4th Abbasid caliph (r. 785–786)
- Born
- 764
Abū Muḥammad Mūsā ibn al-Mahdī al-Hādī better known by his laqab al-Hādī (الهادي) was the fourth Abbasid caliph who succeeded his father al-Mahdi and ruled from 169 AH until his death in 170 AH. His short reign ended with internal chaos and power struggles with his mother.