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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
bayhaqi:2192 – al-Barāʾ > Qīl Hadhā al--Adhīn Mātūā Qabl

[Machine] That they turn to the Kaaba and men were killed, so we did not know what to say about them. Then Allah revealed {And Allah would not let your faith be lost. Indeed Allah is Kind and Merciful to the people}. It was narrated by Al-Bukhari from Abu Nuaim.  

البيهقي:٢١٩٢ – وَبِإِسْنَادِهِ عَنِ الْبَرَاءِ قَالَ قِيلَ هَذَا الَّذِينَ مَاتُوا قَبْلَ

أَنْ تُحَوَّلَ إِلَى الْكَعْبَةِ وَرِجَالٌ قُتِلُوا فَلَمْ نَدْرِ مَا نَقُولُ فِيهِمْ فَأَنْزَلَ اللهُ ﷻ {وَمَا كَانَ اللهُ لِيُضِيعَ إِيمَانَكُمْ إِنَّ اللهَ بِالنَّاسِ لَرَءُوفٌ رَحِيمٌ} رَوَاهُمَا الْبُخَارِيُّ عَنْ أَبِي نُعَيْمٍ  

See similar narrations below:

Collected by Ṭabarānī
tabarani:11729 – ʿAbdullāh b. Muḥammad b. Saʿīd b. Abū Maryam > Muḥammad b. Yūsuf al-Firyābī > Isrāʾīl > Simāk b. Ḥarb > ʿIkrimah > Ibn ʿAbbās

[Machine] They said, "O Messenger of Allah, what do you think about those who died while they were praying towards Al-Masjid al-Aqsa? So Allah revealed, "Allah would not leave your faith to waste. Indeed, Allah is compassionate and merciful towards people."  

الطبراني:١١٧٢٩ – حَدَّثَنَا عَبْدُ اللهِ بْنُ مُحَمَّدِ بْنِ سَعِيدِ بْنِ أَبِي مَرْيَمَ ثنا مُحَمَّدُ بْنُ يُوسُفَ الْفِرْيَابِيُّ ثنا إِسْرَائِيلُ عَنْ سِمَاكِ بْنِ حَرْبٍ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ

قَالُوا يَا رَسُولَ اللهِ أَرَأَيْتَ الَّذِينَ مَاتُوا وَهُمْ يُصَلُّونَ إِلَى بَيْتِ الْمَقْدِسِ فَأَنْزَلَ اللهُ ﷻ {مَا كَانَ اللهُ لِيُضِيعَ إِيمَانَكُمْ إِنَّ اللهَ بِالنَّاسِ لرءُوفٌ رَحِيمٌ}