And, for an earnest of a greater honor,He bade me, from him, call thee thane of Cawdor: In which addition, hail, most worthy thane,For it is thine.
The thane of Cawdor lives. Why do you dress me in borrowed robes?
Animals (Act 3, Scene 4)
What man dare, I dare. Approach thou like the rugged Russian bear, the armed rhinoceros, or th' Hyrcan tiger; Take any shape but that, and my firm nerves shall never tremble.
In this scene Macbeth is told that he is officially the new thane of Cawdor. He asks why he is being "dressed in borrowed robes" because as far as he knows the title belongs to another. The use of the clothing imagery helps to understand the situation by showing that he does not own the title but is taking it from someone.
In this scene Macbeth is is talking to Banquo's ghost which he thinks has come back to scare him after he had Banquo killed. This scene shows how brave and strong Macbeth thinks he is by using the imagery of the bear, tiger, and rhinoceros. These animals all have powerful and intimidating connotations, and by Macbeth saying no less can scare him shows his "strength".