It is narrated from Abdullah bin Umar (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever among you comes for the Friday (prayer), he should perform ghusl (ritual bath)."
Hadith Referenceمسند الإمام الشافعي / كتاب الجمعة / 410
Hadith Takhrijاخرجہ البخاری، الجمعۃ، باب الخطبۃ على المنبر (919) ومسلم، الجمعۃ، باب کتاب الجمعۃ (844)۔