al-Walid bin Muslim al-Quraishi الوليد بن مسلم القرشي · The Book of Wills

"O Messenger of Allah, my mother has died; can I give charity on her behalf?" He said: "Yes." He said: "What kind of charity is best?" He said: "Providing drinking water." And that is the drinking-fountain of Sa'd in Al-Madinah.

"The Messenger of Allah said to me: 'O Abu Dharr, I think that you are weak, and I like for you what I like for myself. Do not accept a position of Amir over two people, and do not agree to be the guardian of an orphan's property.'"