لَعَلّي أَعمَلُ صالِحًا فيما تَرَكتُ ۚ كَلّا ۚ إِنَّها كَلِمَةٌ هُوَ قائِلُها ۖ وَمِن وَرائِهِم بَرزَخٌ إِلىٰ يَومِ يُبعَثونَ

So that I may rectify what I left undone.” By no means! It is merely a word he says; a barrier stands behind them until the Day they are resurrected.