Hadith 123 b - The Book of Faith - Sahih Muslim - صحيح مسلم - Collection of Actions, Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم) - Kutub as-Sittah

1. The Book of Faith - كتاب الإيمان

55) Chapter: Clarifying the ruling of the action of an unbeliever if he accepts Islam after it

Hakim b. Hizam reported to 'Urwa b. Zubair that he said to the Messenger of Allah (ﷺ):

Messenger of Allah, do you think if there is any reward (of the Lord with me on the Day of Resurrection) for the deeds of religious purification that I performed in the state of ignorance, such as charity, freeing a slave, cementing of blood-relations? Upon this he (the Messenger of Allah) said to him: You have accepted Islam with all the previous virtues that you had practised.

Reference: 123 b
English reference: Book 1, Hadith 223
In-book reference: Book 1, Hadith 231
Grade: Sahih
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55) باب بَيَانِ حُكْمِ عَمَلِ الْكَافِرِ إِذَا أَسْلَمَ بَعْدَهُ ‏‏

وَحَدَّثَنَا حَسَنٌ الْحُلْوَانِيُّ، وَعَبْدُ بْنُ حُمَيْدٍ، - قَالَ الْحُلْوَانِيُّ حَدَّثَنَا وَقَالَ عَبْدٌ، حَدَّثَنِي - يَعْقُوبُ، - وَهُوَ ابْنُ إِبْرَاهِيمَ بْنِ سَعْدٍ - حَدَّثَنَا أَبِي، عَنْ صَالِحٍ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي عُرْوَةُ بْنُ الزُّبَيْرِ، أَنَّ حَكِيمَ بْنَ حِزَامٍ، أَخْبَرَهُ أَنَّهُ، قَالَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم أَىْ رَسُولَ اللَّهِ أَرَأَيْتَ أُمُورًا كُنْتُ أَتَحَنَّثُ بِهَا فِي الْجَاهِلِيَّةِ مِنْ صَدَقَةٍ أَوْ عَتَاقَةٍ أَوْ صِلَةِ رَحِمٍ أَفِيهَا أَجْرٌ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏‏ ‏.‏ "‏ أَسْلَمْتَ عَلَى مَا أَسْلَفْتَ مِنْ خَيْرٍ ‏"