Pass dusted hands over your face and back of your hand for purifying yourself when needed.

This hadith teaches us about purifying ourselves. It was narrated by 'Abdur Rahman bin Abza and 'Ammar that they went to the Prophet Muhammad ﷺ who said that it is sufficient to pass dusted hands over the face and backs of our hands for purifying ourselves. This means that we don't need to use water or any other material for cleaning our faces or hands if we have dust on them. We can just rub our faces and backs of our hands with dust as a way of purifying ourselves. This hadith also teaches us about being mindful in how we clean ourselves as well as being mindful in conserving resources such as water which are precious gifts from Allah SWT.