﴿ أَمْ يَقُولُونَ شَاعِرٌۭ نَّتَرَبَّصُ بِهِۦ رَيْبَ ٱلْمَنُونِ ﴾

“Or do they say, “[He is but] a poet - let us wait what time will do unto him”?”

Or am means bal do they say that he is ‘A poet for whom we may await the accidents of fate?’ the vicissitudes of time so that he will just die like other poets.