It was narrated from Ibn "Abbas that

he circumambulated the Ka"bah with Mu"awiyah and Mu"awiyah touched all four corners. Ibn "Abbas said to him: Why did you touch these two corners? The Messenger of Allah (ﷺ) did not touch them. Mu"awiyah said: No part of the House is to be forsaken. Ibn "Abbas said: "Indeed in the Messenger of Allah (Muhammad ﷺ) you have a good example to follow" [al-Ahzab 33:21] Mu"awiyah said: You are right.