Bhagavad Gita · 1.43
उत्सन्नकुलधर्माणां मनुष्याणां जनार्दन।नरके नियतं वासो भवतीत्यनुशुश्रुम॥
utsanna-kula-dharmāṇāṁ manuṣhyāṇāṁ janārdana narake niyataṁ vāso bhavatīty anuśhuśhruma
O Janardana, we have heard that those whose family traditions are destroyed dwell in hell for an indefinite period.
— Bhagavad Gita 1.43
Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)