(Qaaf) 50 : 21
وَجَاءَتْ كُلُّ نَفْسٍ مَعَهَا سَائِقٌ وَشَهِيدٌ
And everyone will come, along with it there will be a driver and a witness.
Since this verse is about the condition of disbelievers on the Day of Judgement, ‘driver’ is the Angel ‘Atheed’ and the ‘witness’ is disbeliever’s ‘Jinn soul mate’ who is the Satan. See explanation 8: 48-53; 31: 15; and 43: 36-39.