أَلَمْ تَرَ أَنَّهُمْ فِى كُلِّ وَادٍ يَهِيمُونَ
Alam tara annahum fee kulli waadiny yaheemoon
Do you not see how they rove aimlessly in every valley;
Do you not see how they wander aimlessly through every valley,
Wādī does double duty in Arabic: a valley, and also a subject or line of talk, so that saying someone is in another valley means he has gone off onto something else. The picture is of movement in every direction without arrival, sharpened by yahīm, the verb for a camel wandering in thirst. Two verses later the surah exempts the poets who believe, so what is faulted is a manner of speaking.