פירוש על קידושין 63:7

But perhaps he would become angry: And he would have said something to his father in anger.

And he would have violated: Rav Huna.

On account of, "before the blind": Such that he would cause his son to sin.

R. Huna tests his son to see if his son will be angry when R. Huna tears up his own property. R. Huna seems to want to see if his son cares for him, or only cares for his father’s property.

If Rabbah gets angry then R. Huna will have caused him to sin by dishonoring his parents, and it is against the Torah to try to incite another person to sin.
The answer is that R. Huna forgave his honor. I’m not really sure how this would work—if he tells Rabbah he is forgiving his honor, then the whole test won’t really work. And if he doesn’t tell him, then how is he forgiving his honor?