al-Qarawīyīn University in Fez, Morocco is recognised by many historians as the oldest degree-granting university in the world, having been founded in 859 by Fatima al-Fihri. While the madrasa college could also issue degrees at all levels, the jāmiʻahs (such as al-Qarawīyīn and al-Azhar University) differed in the sense that they were larger institutions, more universal in terms of their complete source of studies, had individual faculties for different subjects, and could house a number of mosques, madaris, and other institutions within them. Such an institution has thus been described as an "Islamic university".
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When was al-Qarawiyin University founded?
859