Parashas Vayeishev · Passuk 37:2
These are the generations of Yaakov: Yosef, being seventeen years old, was feeding the flock with his brothers; and he was a lad with the sons of Bilhah, and with the sons of Zilpah, his father’s wives; and Yosef brought their evil report unto their father.
Torah Temimah points to Yerushalmi Peah 1:1.
English: What was he saying? Rabbi Meir says: He said they are suspected of [eating] a limb from a living animal. Rabbi Yehudah says: He said they demean the sons of the maidservants and treat them as slaves. And Rabbi Shimon says: He said they cast their eyes upon the daughters of the land.
Derash on the verse (Yerushalmi sugya) — not a formal named middah of the 13. The undefined “evil report” is filled by three tannaitic explanations of the brothers’ alleged misconduct.
The evil report Yosef brought consisted, according to the Tannaim, of one of three charges: eating a limb from a living animal, mistreating the sons of the maidservants, or casting eyes on the local women.