城 門 失 火 殃 及 池 魚

城門失火，殃及池魚

城门失火，殃及池鱼

cheng2 men2 shi1 huo3 , yang1 ji2 chi2 yu2

a fire in the city gates is also a calamity for the fish in the moat (idiom); the bystander will also suffer fig. you can't escape responsibility for your actions ask not for whom the bell tolls - it tolls for thee