Are you referring to a or legend involving a character named Selena and a "free servant" or "devotee" ( Kul )?
Are you asking for the or meaning behind a specific song or poem with this title?
It looks like the phrase might be a specific lyric or a poetic title that could be interpreted in a few different ways, as the terms seem to be a blend of Turkish roots.
To make sure I provide the right kind of story, could you clarify what you are looking for? For example: