question #1 Sahih al-Bukhari 1388, Book 23, Hadith 140 : Can a person perform charitable acts on behalf of a deceased relative to benefit them in the hereafter?

A man said to the Prophet (p.b.u.h), “My mother died suddenly and I thought that if she had lived she
would have given alms. So, if I give alms now on her behalf, will she get the reward?” The Prophet (ﷺ)
replied in the affirmative.