The sun never asks the earth for thanks.
— Hafiz

I like this simple version, though it’s actually a misquotation.

Daniel Ladinsky’s ‘The Gift’, a book of translations of poems by Hafiz, includes the following:

Even
After
All this time
The sun never says to the earth,

“You owe Me.”

Look
What happens
With a love like that,
It lights the
Whole Sky.