what is the central image which is the the borrow robbes through the character of Mabceth and LadyMacbeth? Explain

False order is a motif in this play. Macbeth and L. Macbeth steal the crown; hence their robes are merely "borrowed" on false pretenses. Macbeth foreshadows this idea when he questions how he became Thane of Cawdor.

The Thane of Cawdor lives....Why do you dress me in borrowed robes. act 1 sc 3