ا لأحْمَقُ الَّذِي يُكَرِّرُ تَصَرُّفاتِهِ الحَمْقاءَ، كَالكَلْبِ يَعُودُ إلَى قَيئِهِ.
As a dog returns to his own vomit, So a fool repeats his folly.