Parashas Chayei Sarah · Passuk 24:61
Then Rivkah and her maids arose, mounted the camels, and followed the man. So the servant took Rivkah and went his way.
Torah Temimah points to Pesachim 3a. E-Daf · Sefaria — Pesachim 3a
TT lemma: ותרכבנה.
A person should always speak in clean language… And as for the verse “and they rode on the camels,” there it is because of the height of the camels.
Custom (Bavli — clean language; exception for camels)
One should prefer clean speech; the Torah itself models this by varying terminology. Camel-riding by women is an exception justified by the animal’s height.