Midrash su Proverbi 30:2

When Pharaoh heard this: Pharaoh sent and called Joseph (ibid., v. 13). R. Joshua the son of Levi said: Out of adversity comes tranquility; out of darkness, light; and out of the degradation of the righteous, their exaltation. Hence Scripture states: If thou hast done foolishly in lifting up thyself, or if thou hast planned devices, lay thy hand upon thy mouth (Prov. 30:2).