ibn Abbas · Wills (Kitab Al-Wasaya)

I heard the Messenger of Allah (ﷺ) say: Allah has appointed for everyone who has a right what is due to him, and no bequest must be made to an heir.

A woman said: Messenger 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 (ﷺ) said: Yes, give sadaqah on her behalf.