Midrash su Genesi 43:32

And Joseph brought an evil report of them to his father (ibid. 37:2). He told his father: “My brothers eat the limbs of living animals.” The Holy One, blessed be He, declared: Be assured, you will be suspected of committing the very act you accused them of committing: And they set on for him by himself, and for them by themselves, and for the Egyptians that did eat with him (ibid. 43:32). Because he spoke slander against them, his brothers became embittered, and set in motion the chain of events that resulted in the descent of our ancestors to their bondage in Egypt for four hundred years.

(Gen. 37:2:) AND JOSEPH BROUGHT BAD REPORTS OF THEM < UNTO HIS FATHER >. What is the meaning of BAD REPORTS? That he had said something slanderous against his brothers. And what slanderous thing did he say against them? R. Judah said: He said against them that they would cut a limb from a living animal and eat it.¹⁴yPe’ah 1:1 (15d-16a); Gen. R. 84:7. The Holy One said to him: You have said something slanderous against the tribes. Tomorrow, by your life, you are going down to Egypt. Then you shall invite them to eat with you, but they shall suspect you there in regard to the ritual slaughtering. Thus it is stated (in Gen. 43:32): THEY SERVED HIM BY HIMSELF, < AND THEM BY THEMSELVES >…. R. Me'ir says: He said to him: My brothers have set their eyes on Canaanite women. The Holy One said to him: You have said something slanderous against your brothers. Tomorrow, by your life, you are going down to Egypt. Then that woman (Potiphar's wife) shall say (in Gen. 39:17): THE HEBREW SLAVE < WHOM YOU BROUGHT TO US > CAME UNTO ME < TO FONDLE ME >. Ergo (in Gen. 37:2): AND JOSEPH BROUGHT < BAD REPORTS OF THEM UNTO HIS FATHER >.