idiom
to clean one's hands
責任を免れること、特に悪い行いから
Meaning
to rid oneself of responsibility for something, especially wrongdoing
Example
He tried to **clean his hands** of the situation, but we all knew he was involved.
彼は状況から**手を洗おう**としたが、私たちは皆彼が関わっていると知っていた。