Things Which Do Not Break Wudu (As Reported in the Hadiths)

1. "Yahya related to me from Malik from Muhammad Ibn 'Umara fro, Muhammad Ibn Ibrahim that the mother of the son of Ibrahim Ibn Abd ar-Rahman Ibn Awful questioned Umm Salama, the wife of the prophet, May Allah bless him and grant him peace, and said, "I am a woman who wears a long skirt and (sometimes) I walk in dirty places." Umm Salama replied, "The Messenger of Allah, May Allah bless him and grant hK peace, said 'What follows (I.e., clean places) purifies it'.""

2. Yahya related to me from Malik that he saw Rabi'a Ibn Abd ar-Rahman vomit several times she. He was in the mosque and he did not leave, nor did he do Wudu before he prayed. 

Yahya said that Malik was asked whether a man who vomited food had to do Wudu before he prayed and he said, "He does not have to do Wudu, but he should rinse the inside of his mouth and wash his mouth out."

3. "Yahya related to me from Malik from Nafi' that Abdullah Ibn Umaru prepared the body of one of Sa'id Ibn Zayd's sons for burial and carried it and then entered the mosque and prayed without doing Wudu.

Yahya said that Malik was asked whether it was necessary to do Wudu because of regurgitating undigested food and he said, "No, Wudu is not necessary, but the mouth should be rinsed."