The Greatest DenominatorGreatest Denominator

Anguttara Nikaya 2.33

BuddhismAnguttara Nikaya 2.33
Mendicants, I say that these two individuals cannot easily be repaid. What two? Mother and father. You would not have done enough to repay your mother and father even if you were to carry your mother around on one shoulder and your father on the other, and if you lived like this for a hundred years, and if you were to anoint, massage, bathe, and rub them; … Parents are very helpful to their children: they raise them, nurture them, and show them the world. …

Dvinnāhaṁ, bhikkhave, na suppatikāraṁ vadāmi. Katamesaṁ dvinnaṁ? Mātu ca pitu ca. Ekena, bhikkhave, aṁsena mātaraṁ parihareyya, ekena aṁsena pitaraṁ parihareyya vassasatāyuko vassasatajīvī so ca nesaṁ ucchādanaparimaddananhāpanasambāhanena. … Bahukārā, bhikkhave, mātāpitaro puttānaṁ āpādakā posakā imassa lokassa dassetāro. …

The same idea in other traditions


ConfucianismAnalects 4.21
The Master said, "The years of parents may by no means not be kept in the memory, as an occasion at once for joy and for fear."
Christianity1 Timothy 5:4
But if any widow have children or nephews, let them learn first to shew piety at home, and to requite their parents: for that is good and acceptable before God.
SufismBustan, ch. 1
When thy servant becomes stricken in years, be not unmindful of thy obligations towards him. If old age binds his hand from service, the hand of generosity yet remains to thee.
JainismUttaradhyayana 32.3
This is the road to it: to serve the Gurus and the old (teachers), to avoid throughout foolish people, to apply oneself earnestly to study, and to ponder zealously on the meaning of the Sûtras.
IslamQuran 31:14
And We have enjoined on man (to be good) to his parents: in travail upon travail did his mother bear him, and in years twain was his weaning: (hear the command), "Show gratitude to Me and to thy parents: to Me is (thy final) Goal.
TaoismTao Te Ching 18
When the Great Tao (Way or Method) ceased to be observed, benevolence and righteousness came into vogue. (Then) appeared wisdom and shrewdness, and there ensued great hypocrisy. When harmony no longer prevailed throughout the six kinships, filial sons found their manifestation; when the states and clans fell into disorder, loyal ministers appeared.