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ahmad:8858 – Sulaymān > Ismāʿīl > ʿAmr > Saʿīd > Abū Hurayrah

I said: "O Messenger of Allah ﷺ! Who will be the luckiest person, who will gain your intercession on the Day of Resurrection?" Messenger of Allah ﷺ said: O Abu Huraira! "I have thought that none will ask me about it before you as I know your longing for the (learning of) Hadiths. The luckiest person who will have my intercession on the Day of Resurrection will be the one who said sincerely from the bottom of his heart "None has the right to be worshipped but Allah." (Using translation from Bukhārī 99)  

أحمد:٨٨٥٨ – حَدَّثَنَا سُلَيْمَانُ حَدَّثَنَا إِسْمَاعِيلُ حَدَّثَنِي عَمْرٌو عَنْ سَعِيدٍ عَنْ أَبِي هُرَيْرَةَ قَالَ

قُلْتُ لِلنَّبِيِّ ﷺ مَنْ أَسْعَدُ النَّاسِ بِشَفَاعَتِكَ يَوْمَ الْقِيَامَةِ؟ فَقَالَ النَّبِيُّ ﷺ لَقَدْ ظَنَنْتُ يَا أَبَا هُرَيْرَةَ أَلَّا يَسْأَلَنِي عَنْ هَذَا الْحَدِيثِ أَحَدٌ أَوَّلَ مِنْكَ لِمَا رَأَيْتُ مِنْ حِرْصِكَ عَلَى الْحَدِيثِ أَسْعَدُ النَّاسِ بِشَفَاعَتِي يَوْمَ الْقِيَامَةِ مَنْ قَالَ لَا إِلَهَ إِلَّا اللهُ خَالِصَةً مِنْ قِبَلِ نَفْسِهِ  

See similar narrations below:

Collected by Bukhārī, Nasāʾī's Kubrá
bukhari:99 – ʿAbd al-ʿAzīz b. ʿAbdullāh > Sulaymān > ʿAmr b. Abū ʿAmr > Saʿīd b. Abū Saʿīd al-Maqburī > Abū Hurayrah

I said: "O Messenger of Allah ﷺ! Who will be the luckiest person, who will gain your intercession on the Day of Resurrection?" Messenger of Allah ﷺ said: O Abu Huraira! "I have thought that none will ask me about it before you as I know your longing for the (learning of) Hadiths. The luckiest person who will have my intercession on the Day of Resurrection will be the one who said sincerely from the bottom of his heart "None has the right to be worshipped but Allah."  

البخاري:٩٩ – حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ قَالَ حَدَّثَنِي سُلَيْمَانُ عَنْ عَمْرِو بْنِ أَبِي عَمْرٍو عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ عَنْ أَبِي هُرَيْرَةَ أَنَّهُ قَالَ

قِيلَ: يَا رَسُولَ اللَّهِ، مَنْ أَسْعَدُ النَّاسِ بِشَفَاعَتِكَ يَوْمَ الْقِيَامَةِ؟ قَالَ رَسُولُ اللَّهِ ﷺ: «لَقَدْ ظَنَنْتُ يَا أَبَا هُرَيْرَةَ أَنْ لاَ يَسْأَلَنِي عَنْ هَذَا الْحَدِيثِ أَحَدٌ أَوَّلُ مِنْكَ لِمَا رَأَيْتُ مِنْ حِرْصِكَ عَلَى الْحَدِيثِ۔ أَسْعَدُ النَّاسِ بِشَفَاعَتِي يَوْمَ الْقِيَامَةِ مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ خَالِصًا مِنْ قَلْبِهِ أَوْ نَفْسِهِ۔»  

bukhari:6570 – Qutaybah b. Saʿīd > Ismāʿīl b. Jaʿfar > ʿAmr > Saʿīd b. Abū Saʿīd al-Maqburī > Abū Hurayrah

I said, "O Messenger of Allah ﷺ! Who will be the luckiest person who will gain your intercession on the Day of Resurrection?" The Prophet ﷺ said, "O Abu Huraira! I have thought that none will ask me about this Hadith before you, as I know your longing for the (learning of) Hadiths. The luckiest person who will have my intercession on the Day of Resurrection will be the one who said, 'None has the right to be worshipped but Allah,' sincerely from the bottom of his heart."  

البخاري:٦٥٧٠ – حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ حَدَّثَنَا إِسْمَاعِيلُ بْنُ جَعْفَرٍ عَنْ عَمْرٍو عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ الْمَقْبُرِيِّ عَنْ أَبِي هُرَيْرَةَ ؓ

أَنَّهُ قَالَ قُلْتُ يَا رَسُولَ اللَّهِ مَنْ أَسْعَدُ النَّاسِ بِشَفَاعَتِكَ يَوْمَ الْقِيَامَةِ فَقَالَ لَقَدْ ظَنَنْتُ يَا أَبَا هُرَيْرَةَ أَنْ لاَ يَسْأَلَنِي عَنْ هَذَا الْحَدِيثِ أَحَدٌ أَوَّلُ مِنْكَ لِمَا رَأَيْتُ مِنْ حِرْصِكَ عَلَى الْحَدِيثِ أَسْعَدُ النَّاسِ بِشَفَاعَتِي يَوْمَ الْقِيَامَةِ مَنْ قَالَ لاَ إِلَهَ إِلاَّ اللَّهُ خَالِصًا مِنْ قِبَلِ نَفْسِهِ  

nasai-kubra:5811 – ʿAlī b. Ḥujr > Ismāʿīl / Ibn Jaʿfar > ʿAmr > Saʿīd b. Abū Saʿīd > Abū Hurayrah

I said: "O Messenger of Allah ﷺ! Who will be the luckiest person, who will gain your intercession on the Day of Resurrection?" Messenger of Allah ﷺ said: O Abu Huraira! "I have thought that none will ask me about it before you as I know your longing for the (learning of) Hadiths. The luckiest person who will have my intercession on the Day of Resurrection will be the one who said sincerely from the bottom of his heart "None has the right to be worshipped but Allah." (Using translation from Bukhārī 99)  

الكبرى للنسائي:٥٨١١ – أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ عَنْ إِسْمَاعِيلَ وَهُوَ ابْنُ جَعْفَرٍ عَنْ عَمْرٍو عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ عَنْ أَبِي هُرَيْرَةَ قَالَ

قُلْتُ يَا رَسُولَ اللهِ مَنْ أَسْعَدُ النَّاسِ بِشَفَاعَتِكَ يَوْمَ الْقِيَامَةِ؟ فَقَالَ النَّبِيُّ ﷺ لَقَدْ ظَنَنْتُ يَا أَبَا هُرَيْرَةَ أَنْ لَا يَسْأَلَنِي عَنْ هَذَا الْحَدِيثِ أَحَدٌ أَوَّلَ مِنْكَ لِمَا رَأَيْتُ مِنْ حِرْصِكَ عَلَى الْحَدِيثِ أَسْعَدُ النَّاسِ بِشَفَاعَتِي يَوْمَ الْقِيَامَةِ مَنْ قَالَ لَا إِلَهَ إِلَّا اللهُ خَالِصًا مِنْ قِبَلِ نَفْسِهِ