Maliks Muwatta Book 22, Hadith Number 16.

Section : Oaths in General.

Yahya related to me from Malik from Uthman ibn Hafs ibn Umar ibn Khalda that Ibn Shihab had heard that Abu Lubaba ibn Abd al-Mundhir, when Allah turned to him said, “Messenger of Allah, should I leave my people’s house in which I committed wrong action and keep your company, and give away all my property as sadaqa for Allah and His Messenger? “The Messenger of Allah, may Allah bless him and grant him peace, said, “Giving away a third of it is enough for you.”