On the Day when every soul will come disputing [i.e., pleading] for itself, and every soul will be fully compensated for what it did, and they will not be wronged [i.e., treated unjustly].
Remember - O Messenger - the Day when every person will come arguing for himself. He will not argue for anyone else due to the magnitude of the situation. Every soul will be given in full the recompense for what it had done, whether good or bad, and they will not be wronged by any subtraction from their good actions or addition to their evil actions.