For what hath man of all his labour, and of the vexation
&c.] What profit has he by it, when there is so much vexation in it, both in getting it, and in the thought of leaving it to others? What advantage is it to him, when it is all acquired for and possessed by another; and especially of what use is it to him after his death? Even of all wherein he hath laboured under the sun?
the Targum adds, "in this world"; though he has been labouring all his days, yet there is not one thing he has got by his labour that is of any real advantage to him, or can yield him any solid comfort and satisfaction, or bring him true happiness, or lead him to it.