Sunan Ibn Majah, Chapter: The Chapters on Marriage

"Sahlah bint Suhail came to the Prophet (saw) and said: 'O Messenger of Allah (saw), I see signs of displeasure on the face of Abu Hudhaifah when Salim enters upon me." The Prophet (saw) said: "Breastfed him." She said: "How san I breastfeed him when he is a grown man? The Messenger of Allah (saw) smiled and said: "I know that he is a grown man." So she did that, then she came to the Prophet (saw) and said: "I have never seen any signs of displeasure on the face of Abu Hudhayfah after that." And he was present at (the battle of) Badr.