Idiom - Take sth with a Pinch of Salt

Take sth with a pinch/grain of salt:

To listen to a story or an explanation with considerable doubt.

You must take anything she says with a pinch of salt. She doesn't always tell the truth.

They took my explanation with a grain of salt. I was sure they didn't believe me.

Persian:با دیده تردید به چیزی نگریستن، چیزی را سریع باور نکردن

Idiom - Rub Salt in the Wound

Rub Salt in the Wound:

To deliberately make sb's unhappiness, shame, or misfortune worse.

Don't rub salt in the wound by telling me how enjoyably the party was.

Persian: نمک به زخم پاشیدن