Keep watch over yourself and your faithfulness to Allah SWT; do good deeds even after death; stay vigilant in your faith as it brings great rewards from Allah SWT.

This hadith speaks about the great reward that comes with keeping watch for a day and night. It is said that this activity is better than fasting for an entire month or standing in prayer every night. If someone dies while performing this duty, their activity will continue to be rewarded perpetually and they will be saved from the torture of the grave. This hadith encourages us to stay vigilant in our faith as it brings great rewards from Allah SWT. It also teaches us that even after death, we can still receive rewards if we have done good deeds during our lifetime.