مُوَطَّأُ مَالِكٍ
Muwatta Malik 53
Purity
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَلِيَّ بْنَ أَبِي طَالِبٍ، وَعَبْدَ اللَّهِ بْنَ عَبَّاسٍ، كَانَا لاَ يَتَوَضَّآنِ مِمَّا مَسَّتِ النَّارُ .
Yahya related to me from Malik that he had heard that Ali ibn Abi Talib and Abdullah ibn Abbas did not do wudu after eating cooked food.
Arabic/English book reference: Book 2, Hadith 23