Provérbios 19:22

(22) The desire of a man is his kindness—i.e., what makes a man desired or beloved is his kindness. Or, the kindness of a man consists in—is shewn by—his good-will, even though he cannot carry it out.

And a poor man (who would do a kindness if he could) is better than a liar.—Than a rich man who could help another, but professes to be unable to do so.