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

كَانَ بَيْنَ مُصَلَّى رَسُولِ اللَّهِ ﷺ وَبَيْنَ الْجِدَارِ مَمَرُّ الشَّاةِ  

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

كَانَ جِدَارُ الْمَسْجِدِ عِنْدَ الْمِنْبَرِ مَا كَادَتِ الشَّاةُ تَجُوزُهَا  

I used to accompany Salama bin Al-Akwaʿ and he used to pray behind the pillar which was near the place where the Qur'ans were kept. I said, "O Abu Muslim! I see you always seeking to pray behind this pillar." He replied, "I saw Messenger of Allah ﷺ always seeking to pray near that pillar."  

كُنْتُ آتِي مَعَ سَلَمَةَ بْنِ الأَكْوَعِ فَيُصَلِّي عِنْدَ الأُسْطُوَانَةِ الَّتِي عِنْدَ الْمُصْحَفِ فَقُلْتُ يَا أَبَا مُسْلِمٍ أَرَاكَ تَتَحَرَّى الصَّلاَةَ عِنْدَ هَذِهِ الأُسْطُوَانَةِ قَالَ فَإِنِّي رَأَيْتُ النَّبِيَّ ﷺ يَتَحَرَّى الصَّلاَةَ عِنْدَهَا