Parashas Chayei Sarah · Passuk 24:52
When Avraham’s servant heard their words, he bowed low to the ground before Hashem.
Rashi on Bereishis 24:52 / Bereshit Rabbah (classical source on this passuk; not listed as a numbered Torah Temimah unit here).
Lemma / focus: וישתחו ארצה.
English: From here [we learn] that one gives thanks for good news.
Derash on the verse (Rashi / midrash) — not a formal named middah of the 13: the bowing is read as thanksgiving for favorable news.
When the servant heard their consent he bowed to the ground before Hashem; from here we learn that one gives thanks for good news.