translation.en: 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.
translation.zh: 我们很容易这样想 那些出自al-Hikma的书籍，看上去像是专门给穆斯林读的。 其实不然。当时修建图书馆的国王 名叫阿尔马蒙－他是阿尔拉希德的儿子。