Give my umbrella to a stranger on a rainy day

Today, I was walking home from work in the pouring rain without an umbrella. I was walking just behind an elderly man who had an umbrella. As we both passed under the overhang to an apartment building, he stopped, turned around and handed me the umbrella. He said, “This is my stop and you look like you need an umbrella. Pass it along someday when the opportunity arises.” MMT