Sahih al-Bukhari, Volume 4, Book 53, Hadith 328 (USC-MSA) ⓘ
Narrated Abu Huraira: Allah's Messenger said, "My heirs should not take even a single Dinar (i.e. anything from my property), and whatever I leave, excluding the expenditure of my wives and my laborers, will be Sadaqa (i.e. be used for charity)."'
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ يَقْتَسِمُ وَرَثَتِي دِينَارًا، مَا تَرَكْتُ بَعْدَ نَفَقَةِ نِسَائِي وَمَئُونَةِ عَامِلِي فَهْوَ صَدَقَةٌ " .
also referenced under: Book 57, Hadith 5 (In-Book) & Hadith 3096 (DarusSalam)