Wills and Testaments (Wasaayaa)
Ṣaḥīḥ al-Bukhārī 2742
فَالثُّلُثُ، وَالثُّلُثُ كَثِيرٌ، إِنَّكَ أَنْ تَدَعَ وَرَثَتَكَ أَغْنِيَاءَ خَيْرٌ مِنْ أَنْ تَدَعَهُمْ عَالَةً يَتَكَفَّفُونَ النَّاسَ فِي أَيْدِيهِمْ، وَإِنَّكَ مَهْمَا أَنْفَقْتَ مِنْ نَفَقَةٍ فَإِنَّهَا صَدَقَةٌ، حَتَّى اللُّقْمَةُ الَّتِي تَرْفَعُهَا إِلَى فِي امْرَأَتِكَ، وَعَسَى اللَّهُ أَنْ يَرْفَعَكَ فَيَنْتَفِعَ بِكَ نَاسٌ وَيُضَرَّ بِكَ آخَرُونَ
fa-ath-thuluthu, wa-ath-thuluthu kathīrun, innaka an tadaʿa warathataka aghniyāʾa khayrun min an tadaʿahum ʿālatan yatakaffafūna an-nāsa fī aydīhim, wa-innaka mahmā anfaqta min nafaqatin fa-innahā ṣadaqatun, ḥattā al-luqmah at-tī tarfaʿuhā ilā fī āmraʾatika, waʿasā-Llāh an yarfaʿaka fayantafiʿa bika nāsun wayuḍarra bika ākharūna
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Sa`d bin Abu Waqqas:The Prophet (ﷺ) came visiting me while I was (sick) in Mecca, ('Amir the sub-narrator said, and he disliked to die in the land, whence he had already migrated). He (i.e. the Prophet) said, "May Allah bestow His Mercy on Ibn Afra (Sa`d bin Khaula)." I said, "O Allah's Messenger (ﷺ)! May I will all my property (in charity)?" He said, "No." I said, "Then may I will half of it?" He said, "No". I said, "One third?" He said: "Yes, one third, yet even one third is too much. It is better for you to leave your inheritors wealthy than to leave them poor begging others, and whatever you spend for Allah's sake will be considered as a charitable deed even the handful of food you put in your wife's mouth. Allah may lengthen your age so that some people may benefit by you, and some others be harmed by you." At that time Sa`d had only one daughter
Source
Ṣaḥīḥ al-Bukhārī · 2742