網呑舟の魚を漏らす
Idiom- 1the law has holes large enough for the most wicked men to slip through ; the long arm of the law doesn't reach everywhere ; fishes big enough to eat boats aren't caught by the net Translated by Jiyomi
Other writings and readings
網吞舟の魚を漏らす
expressions (phrases, clauses, etc.) · Godan verb with 'su' ending
JMdict entry 2141210. Source and licence.