وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ رَأَى رَبِيعَةَ بْنَ أَبِي عَبْدِ الرَّحْمَنِ يَقْلِسُ مِرَارًا وَهُوَ فِي الْمَسْجِدِ فَلاَ يَنْصَرِفُ وَلاَ يَتَوَضَّأُ حَتَّى يُصَلِّيَ ‏.‏ قَالَ يَحْيَى وَسُئِلَ مَالِكٌ عَنْ رَجُلٍ قَلَسَ طَعَامًا هَلْ عَلَيْهِ وُضُوءٌ فَقَالَ لَيْسَ عَلَيْهِ وُضُوءٌ وَلْيَتَمَضْمَضْ مِنْ ذَلِكَ وَلْيَغْسِلْ فَاهُ ‏.‏

Yahya related to me from Malik that he saw Rabia ibn Abd ar-Rahman vomit several times when he was in the mosque and he did notleave, nor did he do wudu before he prayed. Yahya said thatMalik was asked whether a man who vomited food had to do wudu and hesaid, "He does not have to do wudu, but he should rinse the inside ofhis mouth and wash his mouth out." Translation Not Available

Book Ref: Muwatta Imam Malik Book 2 Hadith 47
Web Ref:  Muwatta Imam Malik Book 2 Hadith 17