Quran's Tafhim ( explanation)
*75) That is, "They used to charge the Messenger and the believers with false accusations and used to taunt and mock his message. Some times they said he was a sorcerer or a madman; sometimes they ridiculed Tauhid and the concept of the Hereafter; sometimes they invented the story that another one taught him everything; and sometimes they said that the believers had started following him only on account of folly and ignorance "