arjunaviṣādayoga - Verse śloka 42
śloka 42
saṅkaro narakāyaiva kulaghnānāṃ kulasya ca |
patanti pitaro hyeṣāṃ luptapiṇḍodakakriyāḥ ||1-42||
Translation
That mixed caste causes the destroyers of the family and the family itself to fall into hell. Deprived of the rites of pinda and water offerings, their ancestors also fall into hell.