Sentence:  “... This is Mr. Churchill, who, as you are aware, is good enough to come to us for his diaconate, and, as we hope, for much longer; and being a gentleman of independent means, he declines to take any payment.” Saying this Walden rubbed his hands <WSD>together</WSD> and smiled contentedly. 
Meaning of the word marked with <WSD> tags:  At the same time, in the same place; in close association or proximity.