أَنْبَأَنَا الْحَارِثُ بْنُ مِسْكِينٍ، قِرَاءَةً عَلَيْهِ وَأَنَا أَسْمَعُ، عَنِ ابْنِ الْقَاسِمِ، عَنْ مَالِكٍ، عَنْ سَعِيدِ بْنِ عَمْرِو بْنِ شُرَحْبِيلَ بْنِ سَعِيدِ بْنِ سَعْدِ بْنِ عُبَادَةَ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، قَالَ خَرَجَ سَعْدُ بْنُ عُبَادَةَ مَعَ النَّبِيِّ صلى الله عليه وسلم فِي بَعْضِ مَغَازِيهِ وَحَضَرَتْ أُمَّهُ الْوَفَاةُ بِالْمَدِينَةِ فَقِيلَ لَهَا أَوْصِي‏.‏ فَقَالَتْ فِيمَ أُوصِي الْمَالُ مَالُ سَعْدٍ‏.‏ فَتُوُفِّيَتْ قَبْلَ أَنْ يَقْدَمَ سَعْدٌ فَلَمَّا قَدِمَ سَعْدٌ ذُكِرَ ذَلِكَ لَهُ فَقَالَ يَا رَسُولَ اللَّهِ هَلْ يَنْفَعُهَا أَنْ أَتَصَدَّقَ عَنْهَا فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ نَعَمْ ‏"‏‏.‏ فَقَالَ سَعْدٌ حَائِطُ كَذَا وَكَذَا صَدَقَةٌ عَنْهَا لِحَائِطٍ سَمَّاهُ‏.‏

It was narrated from Sa'eed bin 'Amr bin Shurahbil bin Sa'eed bin Sa'd bin 'Ubadah, from his father, that his grandfather said: "Sa'd bin 'Ubadah went out with the Prophet on one of his campaigns, and death came to his mother in Al-Madinah. It was said to her (as she was dying): 'Make a will.' She said: 'To whom shall I make a will? The wealth belongs to Sa'd.' Then she died before Sa'd came. When Sa'd came, he was told about that and he said: 'O Messenger of Allah, will it benefit her if I give in charity on her behalf?' The Prophet said: 'Yes.' Sa'd said: 'Such and such a garden is given in charity on her behalf' -regarding a garden that he named." Translation Not Available

Book reference: Sunan An Nisai Book 30 Hadith 3650
Web reference: Sunan An Nisai Volume 4 Book 30 Hadith 3680