أَخْبَرَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا هُشَيْمٌ، قَالَ الشَّيْبَانِيُّ أَنْبَأَنَا عَنِ الشَّعْبِيِّ، قَالَ أَخْبَرَنِي مَنْ، رَأَى النَّبِيَّ صلى الله عليه وسلم مَرَّ بِقَبْرٍ مُنْتَبِذٍ، فَصَلَّى عَلَيْهِ وَصَفَّ أَصْحَابَهُ خَلْفَهُ ‏.‏ قِيلَ ‏:‏ مَنْ حَدَّثَكَ قَالَ ‏:‏ ابْنُ عَبَّاسٍ ‏.‏

Ash-Shaibani narrated that Ash-Sha'bi said: "Someone who saw the Prophet pass by an isolated grave told me that he offered the funeral prayer there and his Companions formed rows behind him." It was said: "Who told you this?" He said: "Ibn 'Abbas." Translation Not Available

Book Ref: Sunan An Nisai Book 21 Hadith 2024
Web Ref:  Sunan An Nisai Vol 3 Book 21 Hadith 2026