सङ्करो नरकायैव कुलघ्नानां कुलस्य च।
पतन्ति पितरो ह्येषां लुप्तपिण्डोदकक्रियाः।।1.42।।
1.42. Confusion of castes leads to hell the slayers of the family, for their forefathers fall, deprived of the offerings of rice-ball and water (libations).
1.42 Sri Sankaracharya did not comment on this sloka. The commentary starts from 2.10.
Sankaro narakaayaiva kulaghnaanaam kulasya cha; Patanti pitaro hyeshaam luptapindodakakriyaah.
saṅkaraḥ—unwanted children; narakāya—hellish; eva—indeed; kula-ghnānām—for those who destroy the family; kulasya—of the family; cha—also; patanti—fall; pitaraḥ—ancestors; hi—verily; eṣhām—their; lupta—deprived of; piṇḍodaka-kriyāḥ—performances of sacrificial offerings