One of the finest acts of kindness is for a man to treat his father’s friends in a kindly way after he has departed.
Sunan Abi Dawud Book 43, Hadith 371
← Previous Hadith While we were with the Messenger of Allah! (ﷺ) a man of Banu Salmah came to Him and said: Messenger of Allah is there any kindness left that I can do to my parents after their death? He replied: Yes, you can invoke blessings on them, forgiveness for them, carry out their final instructions after their death, join ties of relationship which are dependent on them, and honour their friends.

Sunan Abi Dawud Book 43, Hadith 370 Next Hadith → I saw the Prophet (ﷺ) distributing flesh at Ji'irranah, and I was a boy in those days bearing the bone of the camel, and when a woman who came forward approach the Prophet (ﷺ), he spread out his cloak for her, and she sat on it. I asked: Who is she? The people said: She is his foster-mother.

Sunan Abi Dawud Book 43, Hadith 372