They can't shed blood in their SACRED city.
Game of Thrones Season 1, Episode 6
Here's the SACRED grove.
Vikings Season 1, Episode 8
Now you want me to
break another SACRED vow.
Game of Thrones Season 4, Episode 1
Cows may be SACRED there,
The Big Bang Theory Season 7, Episode 18
It's forbidden to carry weapons
in the SACRED city.
Game of Thrones Season 6, Episode 4