Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "When a man takes a bath on Friday and washes his head, then applies the finest perfume, puts on good clothes, then goes out to the prayer, does not separate two people, then listens attentively to the sermon, his sins until the next Friday, and three more days besides, will be forgiven."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5957