حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، أَنَّهُ سَمِعَ النَّبِيَّ صلى الله عليه وسلم يَقُولُ ‏"‏ مَنْ أَتَى الْجُمُعَةَ فَلْيَغْتَسِلْ ‏"‏ ‏.‏ قَالَ وَفِي الْبَابِ عَنْ عُمَرَ وَأَبِي سَعِيدٍ وَجَابِرٍ وَالْبَرَاءِ وَعَائِشَةَ وَأَبِي الدَّرْدَاءِ ‏.‏ قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عُمَرَ حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏

And Yunus and Ma'mar reported, from Az-Zuhri, from Salim Wudu from his father

"Umar bin Al-Khattab was giving a Khutbah on Friday when a man from the Companions of the Prophet entered. So he said: "What time is it?" So he said: 'I don't know, I heard the call and did nothing more than perform Wudu.' So he said: And Wudu again!? I know surely that the Messenger of Allah has ordered Ghusl.'"