One-fifth of Booty to the Cause of Allah (Khumus)
57/3. Chapter:
The expenditure of the wives of the Prophet saws
Sahih Bukhari
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ سُفْيَانَ، قَالَ حَدَّثَنِي أَبُو إِسْحَاقَ، قَالَ سَمِعْتُ عَمْرَو بْنَ الْحَارِثِ، قَالَ مَا تَرَكَ النَّبِيُّ صلى الله عليه وسلم إِلاَّ سِلاَحَهُ وَبَغْلَتَهُ الْبَيْضَاءَ، وَأَرْضًا تَرَكَهَا صَدَقَةً.
Narrated `Amr bin Al-Harith: The Prophet (ﷺ) did not leave anything (after his death) except his arms, a white mule, and a (piece of) land which he had given as Sadaqa.
Reference : Sahih al-Bukhari 3098In-book reference : Book 57, Hadith 7USC-MSA web (English) reference : Vol. 4, Book 53, Hadith 330