EXTRA · Parashas Vayeishev · Passuk 37:34 · not a Torah Temimah citation on this passuk
Jacob rent his clothes, put sackcloth on his loins, and observed mourning for his son many days.
Classical source (EXTRA side-ring): Bereshis Rabbah 84:19.
Sefaria — Bereshis Rabbah 84:19
English: “And Yaakov tore his garments” — R’ Pinchas said: we surveyed all of Scripture and did not find that Yaakov rose from the bed until the bringers of good news came.
Derash on the verse (Bereshis Rabbah) — not a formal named middah of the 13. Duration of grief is extended across the Yosef arc.
Yaakov’s tearing of garments begins a mourning that the midrash does not lift until the later good news of Yosef.