'अल-निजामिया' मध्यकाल की एक प्रसिद्ध संस्था थी, जो संबंधित थी:

Which Abbasid caliph received medical treatment from Indian physicians (such as Manka) and was cured of a severe illness?

The Mu'tazila creed received official state recognition and patronage during the reign of which Abbasid Caliph?