(The Buddha //  9. Sundarika, Brāhmanasamyutta, Sagāthāvagga, Samyutta Nikāya, Pali Canon)

When kindling wood, do not imagine
This external deed brings purity;
The masters say no purity is gained
By one who seeks it outwardly.

Having given up the fire made from wood,
I kindle the inner light alone.
Always ablaze, my mind is always concentrated,
Fully liberated in the eternal life.