Surah 12. Yusuf, Ayah 9

The phrase interpolated by me within brackets - reflecting the unconscious irony in the attitude of Joseph's brethren - is based on the consensus of most of the classical commentators.

There seems to be some irony here, consistent with the cynical nature of these callous, worldly-wise brethren. The goodness of Joseph was a reproach to their own wickedness. Perhaps the grieved father contrasted Joseph against them, and sometimes spoke of it: "Why don't you be good like Joseph?" This was gall and wormwood to them. Real goodness was to them nothing but a name. Perhaps it only suggested hypocrisy to them. So they plotted to get rid of Joseph. In their mean hearts they thought that would bring back their father's love whole to them. But they valued that love only for what material good they could get out of it. On the other hand their father was neither foolish nor unjustly partial. He only knew the difference between gold and dross. They say in irony, "Let us first get rid of Joseph. It will be time enough then to pretend to be 'good' like him, or to repent of our crime after we have had all its benefits in material things"!