Sahih Al Bukhari Hadith Number 903

Narrated Yahya bin Sa`id: I asked `Amra about taking a bath on Fridays. She replied, ” Aisha said, ‘The people used to work (for their livelihood) and whenever they went for the Jumua prayer, they used to go to the mosque in the same shape as they had been in work. So they were asked to take a bath on Friday.’ “

11  Friday Prayer
Hadith number 903
Volume no 2
Chapter: 16 (The time for the Jumu’ah (prayer) is due when the sun declines (i.e. just after mid-day)