Muwatta Malik, Book 5, Hadith 3 (USC-MSA)

Yahya related to me from Malik from Ibn Shihab that Salim ibn Abdullah said, "One of the companions of the Messenger of Allah, may Allah bless him and grant him peace, came into the mosque on the day of jumua and Umar ibn al Khattab was already giving the khutba. Umar said, 'What (kind of) time is this (to arrive)?' He said, Amir al- muminin, I returned from the market and heard the call to prayer, so I did no more than do wudu.' Umar said, 'You only did wudu as well? You know that the Messenger of Allah, may Allah bless him and grant him peace, used to tell people to do ghusl.' "

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، أَنَّهُ قَالَ دَخَلَ رَجُلٌ مِنْ أَصْحَابِ رَسُولِ اللَّهِ صلى الله عليه وسلم الْمَسْجِدَ يَوْمَ الْجُمُعَةِ وَعُمَرُ بْنُ الْخَطَّابِ يَخْطُبُ فَقَالَ عُمَرُ أَيَّةُ سَاعَةٍ هَذِهِ فَقَالَ يَا أَمِيرَ الْمُؤْمِنِينَ انْقَلَبْتُ مِنَ السُّوقِ فَسَمِعْتُ النِّدَاءَ فَمَا زِدْتُ عَلَى أَنْ تَوَضَّأْتُ ‏.‏ فَقَالَ عُمَرُ وَالْوُضُوءَ أَيْضًا وَقَدْ عَلِمْتَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَأْمُرُ بِالْغُسْلِ ‏.‏

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also referenced under: Book 5, Hadith 228 (In-Book)