Bhagavad Gita 1.44

उत्सन्नकुलधर्मानां मनुष्यानां जनार्दन |
नरकेऽनियतं वासो भवतित्यनुशुश्रुम्

Translation

O Janardan (Krishna), I have heard from the learned that those who destroy family traditions dwell in hell for an indefinite period of time.