Today's word of the day needs no introduction!
به سلامتی / be salamati / cheers!
It literally means to health, but is used as cheers when toasting.
People will also say this to you if you are starting something new. For example, when I started my new job, I heard "Oh! You are starting a new job! Be salamati!"
The weekend is always something to celebrate, so try out this phrase next time you make a toast!