What should be the distance between the person offering Salat (prayer) and the Sutra?

Narrated Sahl (bin Sa`d):

The distance between the Musalla of Allah's Messenger (ﷺ) and the wall was just sufficient for a sheep to pass through .

حَدَّثَنَا عَمْرُو بْنُ زُرَارَةَ، قَالَ أَخْبَرَنَا عَبْدُ الْعَزِيزِ بْنُ أَبِي حَازِمٍ، عَنْ أَبِيهِ، عَنْ سَهْلٍ، قَالَ كَانَ بَيْنَ مُصَلَّى رَسُولِ اللَّهِ صلى الله عليه وسلم وَبَيْنَ الْجِدَارِ مَمَرُّ الشَّاةِ‏.‏

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.‏