Observe in all this Joseph drops not a word of complaint against any, not a syllable either of his brethren's cruelty or his mistress's injustice. Would the Reader know the cause why he did not, I refer him to Joseph's sentiment: Genesis 45:7-8.
Related Commentaries of Genesis 40:15
Genesis 40:15
15 For indeed I was stolen away out of the land of the Hebrews: and here also have I done nothing that they should put me into the dungeon.