Parashas Toldos · Passuk 25:28
Yitzchak favored Esav because he had a taste for game, and Rivkah favored Yaakov.
Rashi on Bereishis 25:28 (classical source on this passuk; not listed as a numbered Torah Temimah unit here).
Lemma / focus: בפיו.
English: As the Targum: in Yitzchak’s mouth (the game he ate). And midrashically: in Esav’s mouth—he would trap him and deceive him with his words.
Derash on the verse (Rashi / midrash) — not a formal named middah of the 13: the ambiguous “in his mouth” is given a plain and a midrashic sense.
Yitzchak loved Esav for the game that was in his mouth—either the food he brought, or the deceptive words with which Esav trapped him; Rivkah loved Yaakov.