Now it's very easy to assume that those books, because they were from a library called Bait al-Hikma, were Muslim books, but that's not the case because the caliph that built that library, his name was al-Ma'mun -- he was Harun al-Rashid's son.
الآن من السهل التخمين أن تلك الكتب ، ولأنها من مكتبة تدعي الحكمة ، أنها كتب إسلامية ولكن هذا خطا شائع ، لأن الخليفة الذي بنى هذه المكتبة إسمه المأمون ..وهو ابن هارون الرشيد