Questioner: Everyone has a [jinn] companion [qareen], is it possible for the qareen to become visible to the eye [whether in their] true form or another?
Al-Albaani: Allaah knows best. It is possible that the jinn can manifest itself in different forms, this is something unequivocal. As for the question [specifically] about the qareen [assigned to every individual] then I don’t have an answer, since nothing has been reported to us in this regard.
Questioner: Is it true or [just something] imaginary that after a person is murdered it [i.e., his qareen] becomes visible?
Al-Albaani: No, that’s a myth.
Al-Hudaa wan-Noor, 215.