What?! This is nonsense! My mother tounge is Persian and I have lost count how many time I have heard this in TV, public places, etc.

Oh boi, I have a treat for you.

There are billboards in famous public squares or places in Iran which even have countdown until destruction of Israel! Here is one from a semi-official news agency that has ties with IRGC! The article is from a few years ago, but you can still find these billboards throughout the cities!

Title of the news article: "Countdown of destruction of Zionist regime in Palestine"

On the billboard: "Remaining until destruction of Israel"

https://www.tasnimnews.com/fa/news/1396/05/10/1480680/روز-شم...

This one is installed in the center of Tehran, the capital!

Edited to fix the style

“Wiped off the map” was the English translation by the government-run IRIB of Ahmadinejad's famous speech.

https://web.archive.org/web/20070708083524/http://www.iribne...

Here is what I found on this claim: https://www.washingtonpost.com/blogs/fact-checker/post/did-a...

The Iranian government is very open about its goal to destroy Israel. However they also make sure to point out that "destroying Israel" does not mean "kill all Jews".

I have no knowledge of the timeline here so don't know the facts but in any context this is a silly retort.