Sahih Bukhari

Narrated Hakim bin Hizam:I said to Allah's Messenger (ﷺ), ""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 (ﷺ) replied, ""You became Muslim with all those good deeds (Without losing their reward)