line one's pockets

Idioms  

1. Accept a bribe or other illicit payment, as in The mayor and his cronies found dozens of ways to line their pockets. This expression dates from the mid-1500s, when it was also put as line one's purse.

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Example Sentences

“We will mercilessly fight corruption in the Defense Ministry. We will not let anyone line one's pockets, especially in the Defense Ministry, which performs the sacred mission of defending the independence and territorial integrity of our state,” Poroshenko said in a statement.

From Newsweek