question #1 Sahih al-Bukhari 2770, Book 55, Hadith 33 : Can giving charity on behalf of a deceased person benefit them in the hereafter?

A man said to Allah’s Messenger (ﷺ) , “My mother died, will it benefit her if I give in charity on her behalf?”
The Prophet (ﷺ) replied in the affirmative. The man said, “I have a garden and I make you a witness that I
give it in charity on her behalf.”