Language:
كتاب الصلاة
8  
Prayers (Salat)
(91)
Chapter: What should be the distance between the person offering Salat (prayer) and the Sutra?
(91)
باب قَدْرِ كَمْ يَنْبَغِي أَنْ يَكُونَ بَيْنَ الْمُصَلِّي وَالسُّتْرَةِ
Sahih al-Bukhari 497

Narrated Salama:

The distance between the wall of the mosque and the pulpit was hardly enough for a sheep to pass through.

حَدَّثَنَا الْمَكِّيُّ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ أَبِي عُبَيْدٍ، عَنْ سَلَمَةَ، قَالَ كَانَ جِدَارُ الْمَسْجِدِ عِنْدَ الْمِنْبَرِ مَا كَادَتِ الشَّاةُ تَجُوزُهَا‏.‏
Reference : Sahih al-Bukhari 497
In-book reference : Book 8, Hadith 144
USC-MSA web (English) reference : Vol. 1, Book 9, Hadith 476
  (deprecated numbering scheme)