take it with a grain of salt

Meaning: 話半分に聞く、鵜呑みにしない

For Example:

‣ Just take what they said with a grain of salt because what they said may be right for them, but it doesn't mean it is for you.

彼らが言うたことは、彼らにとっては正しいかもしれんけど、あんたにとっても正しいとは限らんのやけん、鵜呑みにせんので。

‣ The news may report that the economy is recovering, but I am taking it with a grain of salt.

ニュースでは景気が回復しよるって言いよるかもしれんけど、ほんまかいね。

Synonym:

skeptically

critically