the phenomenon of doubt (hesitation) in pre-islamic (jaheli) poetry is usually accompanied with plagiarism (entehal). plagiary is not limited to any special nation; rather, it is widespread. in literary works of many nations. mohammad ibn-e-sallam aljomahi and abdolmalik ibn-e- hesham are among the most prominent critics of plagiary. also , morgolious, one of the greatest orientalists, has crit...