Parashas Behar · Aliyah 2 · Passuk 25:17
Chabad.org — English translation + Rashi
Torah Temimah cites Bava Metzia 58b.
English: “You shall not wrong one another.” Rabbi Yehudah said: A person should not say to his fellow “How much is this article?” when he has no intention of buying it.
Classical derasha (Bavli Bava Metzia) — example of verbal ona’ah.
Verbal ona’ah includes inquiring about the price of an item with no genuine intention of purchasing it, thereby raising false hopes or wasting the seller’s time.