Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "Whoever takes a bath on Friday like the bath for major ritual impurity and then sets out for Jumu'ah, it is as if he sacrificed a camel; whoever sets out in the second hour, it is as if he sacrificed a cow; whoever sets out in the third hour, it is as if he sacrificed a horned ram; whoever goes to the mosque in the fourth hour, it is as if he sacrificed a hen; and whoever sets out in the fifth hour, it is as if he offered an egg. When the imam comes, the angels come and listen attentively to the sermon."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5863