Volume 2, Book 24, Number 517:
Narrated Hakim bin Hizam:
I said to Allah’s Apostle, “Before embracing Islam I used to do good deeds like giving in charity,
slave-manumitting, and the keeping of good relations with Kith and kin. Shall I be rewarded for
those deeds?” The Prophet replied, “You became Muslim with all those good deeds (Without losing
their reward).”