וְאָמַרְתָּ֖ בִּלְבָבֶ֑ךָ כֹּחִי֙ וְעֹ֣צֶם יָדִ֔י עָ֥שָׂה לִ֖י אֶת־הַחַ֥יִל הַזֶּֽה׃
and thou say in thy heart: ‘My power and the might of my hand hath gotten me this wealth.’
Read midrashic interpretation of Deuteronomy 8:17: and classical rabbinic exegesis.