Р330
УМЫВАТЬ/УМЫТЬ РУКИ
VPsubj:
humanusu. this
WO to refuse to accept responsibility for some matter, withdraw from participation in
sth.usu. in order to avoid unpleasant consequences)
X умывает руки = X washes his hands of it (of thing Y).
From the Biblical account of Pontius Pilate's words at the trial of Jesus (Matt. 27:24).