Idiom - As sound as a dollar

As sound as a dollar:

Very secure and dependable.

The company president believes that his business is as sound as a dollar.

Persian: امن امان، مطمئن

Idiom - As phony as a three-dollar bill

As phony as a three-dollar bill:

Phony, not genuine.

Jack is phony as a three-dollar bill. You can't trust him.

Persian: قلابی، آدم متظاهر، ریاکار