Language:
كتاب الجمعة
11  
Friday Prayer
(40)
Chapter: When the Salat is ended, you may disperse through the land, and seek of the Bounty of Allah
(40)
بَابُ قَوْلِ اللَّهِ تَعَالَى: {فَإِذَا قُضِيَتِ الصَّلاَةُ فَانْتَشِرُوا فِي الأَرْضِ وَابْتَغُوا مِنْ فَضْلِ اللَّهِ}
Sahih al-Bukhari 939

Narrated Sahl:

As above with the addition: We never had an afternoon nap nor meals except after offering the Jumua prayer.

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، قَالَ حَدَّثَنَا ابْنُ أَبِي حَازِمٍ، عَنْ أَبِيهِ، عَنْ سَهْلٍ، بِهَذَا وَقَالَ مَا كُنَّا نَقِيلُ وَلاَ نَتَغَدَّى إِلاَّ بَعْدَ الْجُمُعَةِ‏.‏
Reference : Sahih al-Bukhari 939
In-book reference : Book 11, Hadith 63
USC-MSA web (English) reference : Vol. 2, Book 13, Hadith 61
  (deprecated numbering scheme)