The virtue of the area between the prophet's grave and his Minbar, and the virtue of the spot where his minbar is Sahih Muslim 1390 b
Arabic hadith text
وَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ الْمَدَنِيُّ، عَنْ يَزِيدَ بْنِ الْهَادِ، عَنْ أَبِي بَكْرٍ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَبْدِ اللَّهِ بْنِ زَيْدٍ الأَنْصَارِيِّ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ "مَا بَيْنَ مِنْبَرِي وَبَيْتِي رَوْضَةٌ مِنْ رِيَاضِ الْجَنَّةِ "
Translation
Abdullah b. Zaid al-Ansari heard Allah's Messenger (ﷺ) as saying
That which exists between my pulpit and my house is a garden from the gardens of Paradise.