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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
tabarani:1008 – ʿUbayd b. Ghannām > Abū Bakr b. Abū Shaybah > Abū Muʿāwiyah > Hishām b. ʿUrwah from his father > Aʿtaq

[Machine] Abu Bakr freed seven of those who were being tortured for the sake of Allah, among them were Bilal and Amr ibn Fuheira.  

الطبراني:١٠٠٨ – وَحَدَّثَنَا عُبَيْدُ بْنُ غَنَّامٍ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثنا أَبُو مُعَاوِيَةَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ قَالَ

«أَعْتَقَ أَبُو بَكْرٍ ؓ سَبْعَةً مِمَّنْ كَانَ يُعَذَّبُ فِي اللهِ مِنْهُمْ بِلَالٌ وَعَامِرُ بْنُ فُهَيْرَةَ»  

See similar narrations below:

Collected by Ḥākim
hakim:5241 – Abū Bakr b. Isḥāq > Ismāʿīl b. Qutaybah > Abū Bakr b. Abū Shaybah > Abū Muʿāwiyah > Hishām b. ʿUrwah from his father > ʿĀʾishah

[Machine] "Abu Bakr freed seven people who were being tortured for the sake of Allah Almighty, including Bilal and Amr ibn Fuhayrah." This hadeeth is authenticated according to the conditions of both the Shaykhs (referring to Al-Bukhari and Muslim), but they did not include it in their collections.  

الحاكم:٥٢٤١ – حَدَّثَنَا أَبُو بَكْرِ بْنُ إِسْحَاقَ أَنَا إِسْمَاعِيلُ بْنُ قُتَيْبَةَ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثنا أَبُو مُعَاوِيَةَ عَنْ هِشَامِ بْنِ عُرْوَةَ عَنْ أَبِيهِ عَنْ عَائِشَةَ قَالَتْ

«أَعْتَقَ أَبُو بَكْرٍ سَبْعَةً مِمَّنْ كَانَ يُعَذَّبُ فِي اللَّهِ ﷻ مِنْهُمْ بِلَالٌ وَعَامِرُ بْنُ فُهَيْرَةَ» صَحِيحٌ عَلَى شَرْطِ الشَّيْخَيْنِ وَلَمْ يُخَرِّجَاهُ على شرط البخاري ومسلم