Parashas Eikev · Passuk 7:25
You shall consign the images of their gods to the fire; you shall not covet the silver and gold on them and keep it for yourselves, lest you be ensnared thereby; for that is abhorrent to the ETERNAL your God.
Torah Temimah points to Yerushalmi Avodah Zarah 4:4.
TT lemma: לא תחמד וגו' (unit 5 of 8).
Sefaria — Yerushalmi Avodah Zarah 4:4
English: Whence that a non-Jew nullifies his own idol? R’ Yochanan said: as it is written, “You shall not covet the silver and gold on them and take it for yourself” — you may not covet and take, but others may covet and you may take. [Jerusalem Talmud Avodah Zarah 4:4]
Custom (Yerushalmi — who can nullify)
Only the non-Jew can nullify his idol; once he does, an Israelite may benefit.