The qareen ("companion") is, in Islamic belief, a jinn assigned to every human being. The Quran uses the word at 43:36, where turning from the remembrance of God brings a shaytan as an inseparable qarin; and at 50:23 and 50:27, where at the judgement the person's companion presents them and then disowns them, protesting "I did not make him transgress, but he was himself far astray." A well-known hadith states that every person has a qarin assigned from among the jinn (and an angel), and that even the Prophet had one, though his had submitted and prompted him only to good.
In popular belief the qareen whispers toward wrongdoing, may cause bad dreams, jealousy or discord, and is sometimes blamed for a person's besetting faults or for a spectral "double." The qareen thus gives the abstract idea of temptation a concrete, personal form, an unseen counterpart accompanying each individual through life and testifying against them at the end, and it belongs to the same Quranic order of the jinn as the ifrit, distinguished by its function rather than its power.