Abu Dawud
Marriage
Book Number: 005 / Hadith Number: 2097
Narated By AbuHurayrah : AbuHind cupped the Prophet (pbuh) in the middle of his head. The Prophet (pbuh) said: Banu Bayadah, marry AbuHind (to your daughter), and ask him to marry (his daughter) to you. He said: The best thing by which you treat yourself is cupping.