Sahih Muslim 123b

Hasan al-Hulwani and Abd ibn Humayd narrated to us. Al-Hulwani said: Ya'qub—that is, Ibn Ibrahim ibn Sa'd—narrated to us; Abd said: Ya'qub narrated to me. My father narrated to us, from Salih, from Ibn Shihab, who said: Urwah ibn al-Zubayr informed me that Hakim ibn Hizam told him that he said to the Messenger of Allah (peace and blessings be upon him): ‘Messenger of Allah, what do you think of acts of devotion I performed in the Age of Ignorance, such as charity, freeing a slave, or maintaining family ties? Will I be rewarded for them?’ The Messenger of Allah replied: ‘You have embraced Islam with the good you did before.’