It was narrated to me by Muhammad ibn Hatim, who said: narrated to us Bahz, who said: narrated to us Wuhaib, who said: narrated to us 'Abdullah ibn Tawus, from his father, from Abu Hurairah, from the Prophet, peace be upon him, who said: "It is a right due to Allah upon every Muslim that he bathe every seven days, washing his head and his body."