Translation:

19. (It will be) the Day when no soul shall have power (to do) aught for another: for the Command that Day will be (wholly) with Allah.

Notes (Tafseer)

6010. The answer is suggested by a negative proposition: 'No soul shall have power to do aught for another'. This is full of meaning. Personal responsibility will be fully enforced. In this world we all depend on one another proximately, though our ultimate dependence is always on Allah, now and for ever. But here a father helps a son forward; husband and wife influence each other's destinies; human laws and institutions may hold large masses of mankind under their grip; falsehood and evil may seem to flourish for a time, because a certain amount of limited free-will has been granted to man. This period will be all over then. The good and the pure will have been separated from the evil and the rebellious; the latter will have been rendered inert, and the former will have been so perfected that their wills will be in complete consonance with Allah's Universal Will. The Command, thence forward, will be wholly with Allah.