shake the dust of somewhere from your feet
shake the dust of (something or some place) from (one's) feet
To leave something or some place behind in an effort to seek a new beginning. She thought she'd never amount to anything in New York City unless she managed to shake the dust of her rural hometown from her feet. The company is attempting to rebrand itself and shake the dust of most recent commercial failure from its feet.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
shake the dust of somewhere from your feetBRITISH
If you shake the dust of a place or situation from your feet, you leave it behind forever. The Princess would never be free until she could shake the dust of Kensington Palace from her feet. He insisted that the bank shake the dust of third-world debt from its feet. Note: This expression occurs in the Bible: `And whosoever shall not receive you, nor hear your words, when ye depart out of that house or city, shake off the dust of your feet.' (Matthew 10:14)
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012