C. F. Keil and Franz Delitzsch on Proverbs 28:7

Pro 28:7 7 He who keepeth instruction is a wise son;    But he that is a companion of profligates bringeth his father into shame.

We have translated תורה at Pro 28:4 by “law;” here it includes the father’s instruction regarding the right way of life. נוצר תּורה, according to the nearest lying syntax, has to be taken as pred. זוללים are such as squander their means and destroy their health, vid., under Pro 23:20. רעה signifies, as frequently from the idea of (cf. Pro 29:3) pasturing, or properly of tending, to take care of, and to have fellowship with. יכלים shall put to shame denotes both that he himself does disgrace to him, and that he brings disgrace to him on the part of others.