an Entity references as follows:
Abū al-Faḍl Jaʿfar ibn Muḥammad al-Muʿtaṣim bi-ʾllāh (Arabic: جعفر بن محمد المعتصم بالله; March 822 – 11 December 861), better known by his regnal name Al-Mutawakkil ʿalā Allāh (المتوكل على الله, "He who relies on God") was the tenth Abbasid caliph, under whose reign the Abbasid Empire reached its territorial height. He succeeded his brother al-Wathiq. Deeply religious, he is known as the caliph who ended the Mihna (persecution against many Islamic scholars), released Ahmad ibn Hanbal, and discarded the Muʿtazila, but he has been also subject of criticism for being a tough ruler towards the non-Muslim citizens.