King James Version (KJV)
As a dog returneth to his vomit, so a fool returneth to his folly.
Modern English
Like a dog that returns to his vomit is a fool who repeats his folly.
Hebrew
כְּ֭כֶלֶב שָׁ֣ב עַל קֵֽאוֹ כְּ֝סִ֗יל שׁוֹנֶ֥ה בְאִוַּלְתּֽוֹ׃
kkeleb shab ʿal qeʾvo ksiyl shvoneh bʾivaltvo