أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنِي أَبُو إِسْحَاقَ، قَالَ سَمِعْتُ عَمْرَو بْنَ الْحَارِثِ، يَقُولُ مَا تَرَكَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِلاَّ بَغْلَتَهُ الْبَيْضَاءَ وَسِلاَحَهُ وَأَرْضًا تَرَكَهَا صَدَقَةً ‏.‏

Abu Ishaq narrated: "I heard 'Amr bin Al-Harith say: 'The Messenger of Allah did not leave behind anything except his white mule, his weapon and some land which he left as a charity.'" Translation Not Available

Book Ref: Sunan An Nisai Book 29 Hadith 3595
Web Ref:  Sunan An Nisai Vol 4 Book 29 Hadith 3625