People who speak a language called Sabir, which is a mix of different languages.
It's just a fact, like saying someone speaks Spanish or French.
Examples:
The Sabirs were traders who spoke a mix of languages.
Do you know any Sabirs?
The Sabirs helped people understand each other.
The Sabirs made it easier for everyone to talk.
The Sabirs could understand lots of different languages.
The Sabirs were like language superheroes.