Parashas Vayeishev · Passuk 37:35
All his sons and daughters sought to comfort him; but he refused to be comforted, saying, “No, I will go down mourning to my son in Sheol.” Thus his father bewailed him.
Torah Temimah points to Ta’anis / classic on consolation.
Sefaria — Ta’anis / classic on consolation
English: “And he refused to be comforted” — why? Because one does not accept consolation for the living. But the dead is forgotten from the heart, as it is said: “I am forgotten as a dead man from the heart.”
Derash on the verse (Bavli/midrash style) — not a formal named middah of the 13. Psychological fact about mourning is tied to the verse’s refusal.
True mourning-consolation settles only for the dead; refusal to be comforted can signal that the person is still alive.