This is indeed the kind of giving that actually demands nothing. He does not expect his brother sufferer to pay him, or even to love him. And then he discovers that by the divine paradox of this kind of giving he has found his own reward, whether his brother has yet received anything or not.
Through experience with Twelfth Step work, I came to understand the rewards of giving that demands nothing in return. At first I expected recovery in others, but I soon learned that this did not happen. Once I acquired the humility to accept the fact that every Twelfth Step call was not going to result in a success, then I was open to receive the rewards of selfless giving.