Sahih al-Bukhari 903
Sahih al-Bukhari · Book 11: Friday Prayer · The time for the Jumu'ah (prayer) is due when the sun declines (i.e. just after mid-day)
Narrated Yahya bin Sa`id:
حَدَّثَنَا عَبْدَانُ ، قَالَ أَخْبَرَنَا عَبْدُ اللَّهِ ، قَالَ أَخْبَرَنَا يَحْيَى بْنُ سَعِيدٍ ، أَنَّهُ سَأَلَ عَمْرَةَ عَنِ الْغُسْلِ، يَوْمَ الْجُمُعَةِ فَقَالَتْ قَالَتْ عَائِشَةُ ـ رضى الله عنها ـ كَانَ النَّاسُ مَهَنَةَ أَنْفُسِهِمْ، وَكَانُوا إِذَا رَاحُوا إِلَى الْجُمُعَةِ رَاحُوا فِي هَيْئَتِهِمْ فَقِيلَ لَهُمْ لَوِ اغْتَسَلْتُمْ.
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.' "