Abu Dawud
Wills
Book Number: 011 / Hadith Number: 2875
Narated By 'Aisha, Ummul Mu'minin : A woman said: Apostle of Allah, my mother suddenly died; if it had not happened, she would have given sadaqah (charity) and donated (something). Will it suffice if I give sadaqah on her behalf? The Prophet (pbuh) said: Yes, give sadaqah on her behalf.