Musar zu Bereschit 40:1

From all this, we see the gravity of the issur of lashon hara, twelve months for each man having been decreed upon him, corresponding to the [time of] the judgment in Gehinnom. And while he sat there all of Egypt spoke about his being suspect [with Potiphar's wife], as Rashi explains on the verse (Ibid. 40:1): "And it was after these things that there sinned, etc.", and this [(his being suspected)] was because he had suspected his brothers. But after his punishment was completed, the Holy One Blessed be He remembered his righteousness and raised him higher and higher until he was publicized throughout the land of Egypt in glory and renown as a holy man of G-d, as it is written (Ibid. 41:38): "Can there be found such a one! a man invested with the spirit of G-d?"