What does Deuteronomy 13:17 mean?

Don’t keep anything from that town for yourself. If you do what’s right, God will turn away from his anger, show you compassion, and keep his promises to you and your ancestors. Deuteronomy 13:17 - Modern Text Bible

(Obedience leads to God’s mercy and continued blessing, but only if you don’t try to benefit from what’s been destroyed.)