EXTRA · Parashas Vayeishev · Passuk 37:23 · not a Torah Temimah citation on this passuk
When Joseph came up to his brothers, they stripped Joseph of his tunic, the ornamented tunic that he was wearing,
Classical source (EXTRA side-ring): Bereshis Rabbah 84:16.
Sefaria — Bereshis Rabbah 84:16
English: “And they stripped Yosef of his tunic — the striped tunic that was on him” — this is the very thing that caused [the conflict] for them.
Derash on the verse (Bereshis Rabbah) — not a formal named middah of the 13. The object of jealousy is isolated as the first target.
They begin by removing the kesones passim — the gift that ignited the jealousy — before casting him into the pit.