Hadith 314
´It was narrated from 'Abdullah bin Mas'ud:` "The Messenger of Allah went to the toilet and said: 'Bring me three stones.' So I brought him two stones and a piece of dung. He took the two stones and threw the dung away, saying: 'It is impure.'"
Hadith 635
´It was narrated that 'Aishah said:` "If one of us was menstruating, the Messenger of Allah would tell her to tie her waist-wrapper around herself if the bleeding was heavy, then he would embrace her. And who among you can control his desire as the Messenger of Allah used to control his desire?"