Sahih Bukhari
Good Manners and Form (Al-Adab)
Volume: 008 / Book Number: 073 / Hadith Number: 21
Narrated Hakim bin Hizam:
That he said, "O Allah's Apostle! What do you think about my good deeds which I used to do during the period of ignorance (before embracing Islam) like keeping good relations with my Kith and kin, manumitting of slaves and giving alms etc; Shall I receive the reward for that?" Allah's Apostle said, "You have embraced Islam with all those good deeds which you did.