one of the special features of the prophet's life and religion is his strict teachings dictated to his followers which forced them to give great concern to neatness and protecting the environment.

so the prophet ordered his followers to wash their different body parts that are exposed to pollution as the face, mouth, nose, hands and feet five times per day or more, and washing the whole body frequently as much as possible.

-he warned people not to pollute the areas near living places with dirt.

-he insisted on the importance of getting rid of any dirt caused by humans.

-he obliged his followers to clean their clothes from dirt " najass ".

-he taught his followers "medical isolation"; so he ordered them not to enter the places affected with epidemic diseases and not to leave it in order to prevent the spread of diseases.

with these instructions and many others, the prophet (pbuh) built a complete social system within a healthy atmosphere and clean environment. so there is no place in the prophet's teachings for pollution, dirtiness in clothing, body and the whole environment.