Dress modestly and be mindful when measuring clothing items.

The hadith is about how the wives of Prophet Muhammad were allowed to let their hems hang down. They would measure one forearms length for them with a reed, which was a common measuring tool at that time. This hadith teaches us that modesty and humility are important values in Islam, as it is important to dress modestly and not show too much skin. It also teaches us that we should be mindful of our measurements when we are buying or making clothes, so that they fit properly and look good on us.