Midrasch zu Bereschit 50:20

It is written (Leviticus 19:17) "Do not hate your brother in your heart." And of Joseph it is written (Genesis 50:21) "And he counseled them and he spoke to their hearts." It is written (Leviticus 19:18) "You shall not take revenge and you shall not bear a grudge," and (in respect to Joseph, Genesis 50:20) "And you contemplated evil against me, but G d contemplated it for the good." (Leviticus 25:36) "And let your brother live with you." (Genesis 47:12) "And Joseph sustained his father and his brothers, etc."