Use of right and left hands.
He used to employ his right hand for all purposes excepting the unclean actions involving removal of impurities like cleaning the nose, washing after evacuation and picking up shoes etc. Similarly when he handed over something to any body, he did so with his right hand and when he took over anything, he did so with his right hand. [Zadul Ma’ad, Shamail-e-Tirmizi]
Returning a greeting received through a messenger
When he received a salutation from somebody through someone he made a salutation to him as well as to the messenger in these words: