حَدَّثَنَا أَبُو الْيَمَانِ، قَالَ‏:‏ أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ قَالَ‏:‏ أَخْبَرَنِي عُرْوَةُ بْنُ الزُّبَيْرِ، أَنَّ حَكِيمَ بْنَ حِزَامٍ أَخْبَرَهُ، أَنَّهُ قَالَ لِلنَّبِيِّ صلى الله عليه وسلم‏:‏ أَرَأَيْتَ أُمُورًا كُنْتُ أَتَحَنَّثُ بِهَا فِي الْجَاهِلِيَّةِ، مِنْ صِلَةٍ، وَعَتَاقَةٍ، وَصَدَقَةٍ، فَهَلْ لِي فِيهَا أَجْرٌ‏؟‏ قَالَ حَكِيمٌ‏:‏ قَالَ رَسُولُ اللهِ صلى الله عليه وسلم‏:‏ أَسْلَمْتَ عَلَى مَا سَلَفَ مِنْ خَيْرٍ‏.‏
Translation

Hakim ibn Hizam said to the Prophet, may Allah bless him and grant him peace, "Do you think that the acts of worship which I used to do in the time of the Jahiliyya - maintaining relations with relatives, setting slaves free and sadaqa - will bring me a reward?" Hakim said that the Messenger of Allah, may Allah bless him and grant him peace, said, "When you become Muslim, you keep the good actions you have already done."