- Preferred Label
- al-Mahdi (en), Al-Mahdi (fr), Al-Mahdi (es), Al-Mahdi (it), Al-Mahdi (de)Additional labels
- Abu Abdallah Muhammad ibn Abdallah al-Mansur (Arabic: أبو عبد الله محمد بن عبد الله المنصور), better known by his regnal
name al-Mahdi bi-'llah (المهدي بالله, "He who is guided by God"), was the thirdAbbasid Caliph who reigned from 775 to his
death in 785.