Messenger of Allah ﷺ said, any man who has a slave girl whom he educates properly, teaches good manners, manumits and marries her, will get a double reward And if any man of the people of the Scriptures believes in his own prophet and then believes in me too, he will (also) get a double reward And any slave who fulfills his duty to his master and to his Lord, will (also) get a double reward."  

قَالَ رَسُولُ اللَّهِ ﷺ أَيُّمَا رَجُلٍ كَانَتْ عِنْدَهُ وَلِيدَةٌ فَعَلَّمَهَا فَأَحْسَنَ تَعْلِيمَهَا وَأَدَّبَهَا فَأَحْسَنَ تَأْدِيبَهَا ثُمَّ أَعْتَقَهَا وَتَزَوَّجَهَا فَلَهُ أَجْرَانِ وَأَيُّمَا رَجُلٍ مِنْ أَهْلِ الْكِتَابِ آمَنَ بِنَبِيِّهِ وَآمَنَ بِي فَلَهُ أَجْرَانِ وَأَيُّمَا مَمْلُوكٍ أَدَّى حَقَّ مَوَالِيهِ وَحَقَّ رَبِّهِ فَلَهُ أَجْرَانِ قَالَ الشَّعْبِيُّ خُذْهَا بِغَيْرِ شَىْءٍ قَدْ كَانَ الرَّجُلُ يَرْحَلُ فِيمَا دُونَهُ إِلَى الْمَدِينَةِ وَقَالَ أَبُو بَكْرٍ عَنْ أَبِي حَصِينٍ عَنْ أَبِي بُرْدَةَ عَنْ أَبِيهِ عَنِ النَّبِيِّ ﷺ أَعْتَقَهَا ثُمَّ أَصْدَقَهَا  

0 Abu! some of the people amongst us who belong to Khurasan say that a person who freed his bondswoman and then married her is like one who rode over a sacrificial animal. Sha'bi said: Abu Burda b. Abi Musa narrated it to me on the authority of his father that verily the Messenger of Allah ﷺ said: There are three (classes of persons) who would be given a double reward. One who is amongst the People of the Book and believed in his apostle and (lived) to see the time of Apostle Muhammad ﷺ and affirmed his faith in him and followed him and attested his truth, for him is the double reward; and the slave of the master who discharges all those obligations that he owes to Allah and discharges his duties that he owes to his master, for him there is a double reward. And a man who had a bondswoman and fed her and fed her well, then taught her good manners, and did that well and later on granted her freedom and married her, for him is the double reward. Then Sha'bi said: Accept this hadith without (giving) anything. Formerly a man was (obliged) to travel to Medina even for a smaller hadith than this. This hadith has been narrated by another chain of transmitters like Abu Bakr b. Abi Shaiba, 'Abda b. Sulaiman Ibn Abi 'Umar Sufyan, 'Ubaidullah b. Mu'adh, Shu'ba; all of them heard it from Salih b. Salih.  

رَأَيْتُ رَجُلاً مِنْ أَهْلِ خُرَاسَانَ سَأَلَ الشَّعْبِيَّ فَقَالَ يَا أَبَا عَمْرٍو إِنَّ مَنْ قِبَلَنَا مِنْ أَهْلِ خُرَاسَانَ يَقُولُونَ فِي الرَّجُلِ إِذَا أَعْتَقَ أَمَتَهُ ثُمَّ تَزَوَّجَهَا فَهُوَ كَالرَّاكِبِ بَدَنَتَهُ فَقَالَ الشَّعْبِيُّ حَدَّثَنِي أَبُو بُرْدَةَ بْنُ أَبِي مُوسَى عَنْ أَبِيهِ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ ثَلاَثَةٌ يُؤْتَوْنَ أَجْرَهُمْ مَرَّتَيْنِ رَجُلٌ مِنْ أَهْلِ الْكِتَابِ آمَنَ بِنَبِيِّهِ وَأَدْرَكَ النَّبِيَّ ﷺ فَآمَنَ بِهِ وَاتَّبَعَهُ وَصَدَّقَهُ فَلَهُ أَجْرَانِ وَعَبْدٌ مَمْلُوكٌ أَدَّى حَقَّ اللَّهِ تَعَالَى وَحَقَّ سَيِّدِهِ فَلَهُ أَجْرَانِ وَرَجُلٌ كَانَتْ لَهُ أَمَةٌ فَغَذَاهَا فَأَحْسَنَ غِذَاءَهَا ثُمَّ أَدَّبَهَا فَأَحْسَنَ أَدَبَهَا ثُمَّ أَعْتَقَهَا وَتَزَوَّجَهَا فَلَهُ أَجْرَانِ ثُمَّ قَالَ الشَّعْبِيُّ لِلْخُرَاسَانِيِّ خُذْ هَذَا الْحَدِيثَ بِغَيْرِ شَىْءٍ فَقَدْ كَانَ الرَّجُلُ يَرْحَلُ فِيمَا دُونَ هَذَا إِلَى الْمَدِينَةِ وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا عَبْدَةُ بْنُ سُلَيْمَانَ ح وَحَدَّثَنَا ابْنُ أَبِي عُمَرَ حَدَّثَنَا سُفْيَانُ ح وَحَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ حَدَّثَنَا أَبِي حَدَّثَنَا شُعْبَةُ كُلُّهُمْ عَنْ صَالِحِ بْنِ صَالِحٍ بِهَذَا الإِسْنَادِ نَحْوَهُ  

[Machine] "I saw a man from the people of Khorasan come to him (the Prophet) and he said, 'O Abu Amr, those who came before us from the people of Khorasan used to say that when a man emancipates his slave and then marries her, he is like a passenger with his garment on.' Ash-Sha'bi said Abu Burdah informed me from his father that the Messenger of Allah (ﷺ) said: 'There are three who will have a double reward: a man from the people of the scripture who believed in his Prophet then believed in the Messenger, so he will have two rewards; a slave owned by someone who fulfills his right to Allah, Glorious is He and His right to his master, so he will have two rewards; and a man who had a female slave, so he fed her well and taught her good manners, then he freed her and married her, so he will have two rewards.'"  

رَأَيْتُ رَجُلًا مِنْ أَهْلِ خُرَاسَانَ أَتَاهُ فَقَالَ يَا أَبَا عَمْرٍو إِنَّ مَنْ قَبْلَنَا مِنْ أَهْلِ خُرَاسَانَ يَقُولُونَ إِذَا عَتَقَ الرَّجُلُ أَمَتَهُ ثُمَّ تَزَوَّجَهَا فَهُوَ كَالرَّاكِبِ بَدَنَتَهُ فَقَالَ الشَّعْبِيُّ حَدَّثَنِي أَبُو بُرْدَةَ عَنْ أَبِيهِ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «ثَلَاثَةٌ يُؤْتَوْنَ أَجْرَهُمْ مَرَّتَيْنِ رَجُلٌ مِنْ أَهْلِ الْكِتَابِ آمَنَ بِنَبِيِّهِ ثُمَّ أَدْرَكَ النَّبِيَّ ﷺ فَآمَنَ بِهِ وَاتَّبَعَهُ فَلَهُ أَجْرَانِ وَعَبْدٌ مَمْلُوكٌ يُؤَدِّي حَقَّ اللَّهِ جَلَّ وَعَلَا عَلَيْهِ وَحَقَّ الَّذِي عَلَيْهِ لِمَوْلَاهُ فَلَهُ أَجْرَانِ وَرَجُلٌ كَانَتْ لَهُ أَمَةٌ فَغَذَّاهَا فَأَحْسَنَ غِذَاءَهَا وَأَدَّبَهَا فَأَحْسَنَ أَدَبَهَا ثُمَّ أَعْتَقَهَا وَتَزَوَّجَهَا فَلَهُ أَجْرَانِ»  

0 Abu! some of the people amongst us who belong to Khurasan say that a person who freed his bondswoman and then married her is like one who rode over a sacrificial animal. Sha'bi said: Abu Burda b. Abi Musa narrated it to me on the authority of his father that verily the Messenger of Allah ﷺ said: There are three (classes of persons) who would be given a double reward. One who is amongst the People of the Book and believed in his apostle and (lived) to see the time of Apostle Muhammad ﷺ and affirmed his faith in him and followed him and attested his truth, for him is the double reward; and the slave of the master who discharges all those obligations that he owes to Allah and discharges his duties that he owes to his master, for him there is a double reward. And a man who had a bondswoman and fed her and fed her well, then taught her good manners, and did that well and later on granted her freedom and married her, for him is the double reward. Then Sha'bi said: Accept this hadith without (giving) anything. Formerly a man was (obliged) to travel to Medina even for a smaller hadith than this. This hadith has been narrated by another chain of transmitters like Abu Bakr b. Abi Shaiba, 'Abda b. Sulaiman Ibn Abi 'Umar Sufyan, 'Ubaidullah b. Mu'adh, Shu'ba; all of them heard it from Salih b. Salih. (Using translation from Muslim 154a)   

يَا أَبَا عَمْرٍو إِنَّ مَنْ قَبْلَنَا مِنْ أَهْلِ خُرَاسَانَ يَقُولُونَ إِذَا أَعْتَقَ الرَّجُلُ أمَتَهُ ثُمَّ تَزَوَّجَهَا فَهُوَ كَالرَّاكِبِ بَدَنَتَهُ فَقَالَ الشَّعْبِيُّ حَدَّثَنِي أَبُو بُرْدَةَ بْنُ أَبِي مُوسَى عَنْ أَبِيهِ أَنَّ رَسُولَ اللهِ ﷺ قَالَ ثَلَاثَةٌ يُؤْتَوْنَ أَجْرَهُمْ مَرَّتَيْنِ رَجُلٌ مِنْ أَهْلِ الْكِتَابِ آمَنَ بِنَبِيِّهِ وَأَدْرَكَ النَّبِيَّ ﷺ فَآمَنَ بِهِ وَاتَّبَعَهُ وَصَدَّقَهُ فَلَهُ أَجْرَانِ وَعَبْدٌ مَمْلُوكٌ أَدَّى حَقَّ اللهِ وَحَقَّ مَوَالِيهِ فَلَهُ أَجْرَانِ وَرَجُلٌ كَانَتْ لَهُ أَمَةٌ فَغَذَّاهَا فَأَحْسَنَ غِذَاءَهَا ثُمَّ أَدَّبَهَا فَأَحْسَنَ تَأْدِيبَهَا ثُمَّ أَعْتَقَهَا وَتَزَوَّجَهَا فَلَهُ أَجْرَانِ ثُمَّ قَالَ الشَّعْبِيُّ لِلْخُرَاسَانِيِّ خُذْ هَذَا الْحَدِيثَ بِغَيْرِ شَيْءٍ فَقَدْ كَانَ الرَّجُلُ يَرْحَلُ فِيمَا دُونَ هَذَا الْحَدِيثِ إِلَى الْمَدِينَةِ