Muwatta Imam Malik Book of Purity, Hadith 21

Yahya related to me from Malik that both Muhammad ibn al-Munkadir and Safwan ibn Sulaym transmitted to him from Muhammad ibn Ibrahim ibn al-Harith at-Taymi from Rabia ibn Abdullah ibn al-Hudayr that he had eaten an evening meal with Umar ibn al-Khattab who then prayed without doing wudu.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ، وَعَنْ صَفْوَانَ بْنِ سُلَيْمٍ، أَنَّهُمَا أَخْبَرَاهُ عَنْ مُحَمَّدِ بْنِ إِبْرَاهِيمَ بْنِ الْحَارِثِ التَّيْمِيِّ، عَنْ رَبِيعَةَ بْنِ عَبْدِ اللَّهِ بْنِ الْهُدَيْرِ، أَنَّهُ تَعَشَّى مَعَ عُمَرَ بْنِ الْخَطَّابِ ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ .