Yo mātaraṃ pitaraṃ vā,
jiṇṇakaṃ gatayobbanaṃ —
pahu santo na bharati
taṃ parābhavato mukhaṃ.

Though being well-to-do,
not to support father and mother
who are old and past their youth —
this is a cause of one’s downfall.

Sutta Nipāta 1.98
Everyman’s Ethics: Four Discourses by the Buddha (WH 14), translated by Narada Thera