They (the Jews, Quraish pagans, idolaters, etc.) did not estimate Allah with an estimation due to Him when they said: "Nothing did Allah send down to any human being (by inspiration)." Say (O Muhammad SAW): "Who then sent down the Book which Musa (Moses) brought, a light and a guidance to mankind which you (the Jews) have made into (separate) papersheets, disclosing (some of it) and concealing (much). And you (believers in Allah and His Messenger Muhammad SAW), were taught (through the Quran) that which neither you nor your fathers knew." Say: "Allah (sent it down)." Then leave them to play in their vain discussions. (Tafsir Al-Qurtubi, Vol. 7, Page 37).