وَحَدَّثَنِي مَالِكٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، زَوْجِ النَّبِيِّ صلى الله عليه وسلم أَنَّ رَجُلاً قَالَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم إِنَّ أُمِّي افْتُلِتَتْ نَفْسُهَا وَأُرَاهَا لَوْ تَكَلَّمَتْ تَصَدَّقَتْ أَفَأَتَصَدَّقُ عَنْهَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ نَعَمْ ‏"‏ ‏.‏

Malik related to me from Hisham ibn Urwa from his father fromA'isha, the wife of the Prophet, may Allah bless him and grant himpeace, that a man said to the Messenger of Allah, may Allah bless himand grant him peace, "My mother died suddenly, and I think that hadshe spoken, she would have given sadaqa. Shall I give sadaqa for her?"The Messenger of Allah, may Allah bless him and grant him peace, said,"Yes." Translation Not Available

Book Ref: Muwatta Imam Malik Book 36 Hadith 1456
Web Ref:  Muwatta Imam Malik Book 36 Hadith 53