Близ норы лиса на промысел не ходит

Never do any mischief in the area you live or in the place where you work. See Плохой тот вор, что около себя грабит

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Cf: Dogs don't kill sheep at home (Am.). The fox (wolf) preys farthest from his home (Br.). Jaybirds don't rob their own nest (Am.). No man fouls his hands in his own business (Br.). A wise fox will never rob his neighbour's henroost (Br.)