Na paresaṃ vilomāni,
na paresaṃ katākataṃ.
Attanova avekkheyya,
katāni akatāni ca.

Look not to the faults of others,
nor to their omissions and commissions.
But rather look to your own acts,
to what you have done and left undone.

Dhammapada 4.50
Gemstones of the Good Dhamma, compiled and translated by Ven. S. Dhammika