It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him), while standing on the pulpit, said: "Whoever comes to the Friday prayer, let him take a ritual bath."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1399