Once the Prophet MUHAMMAD (Peace be upon HIM) was with his companions in Masjid al Nabawi. A Bedouin came and began to pass urine, looking at this the companions said Mah Mah (expression used to scold someone severely). Prophet MUHAMMAD (Peace be upon HIM) said: don’t interrupt leave him alone. They left him alone, until he finished urinating and then later Prophet MUHAMMAD (Peace be upon HIM) called him and said: these mosques are not the places meant for urine or filth. But these are for praying and reciting the Quran. Then Prophet MUHAMMAD (Peace be upon HIM) directed someone to clean that area.In this incident too, you can see the humbleness of Prophet MUHAMMAD (Peace be upon HIM).