Muwatta Malik, Book 2, Hadith 53 (In-Book)

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.

وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَلِيَّ بْنَ أَبِي طَالِبٍ، وَعَبْدَ اللَّهِ بْنَ عَبَّاسٍ، كَانَا لاَ يَتَوَضَّآنِ مِمَّا مَسَّتِ النَّارُ ‏.‏

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also referenced under: Book 2, Hadith 23 (USC-MSA)