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bayhaqi:2478 – Abū ʿAbdullāh al-Ḥāfiẓ > Abū al-Naḍr al-Faqīh > Muḥammad b. Muḥammad b. Rajāʾ al-Sanadī > Shaybān b. Abū Shaybah > Abū ʿAwānah > Manṣūr b. Zādhān > al-Walīd Abū Bishr > Abū al-Ṣiddīq al-Nājī > Abū Saʿīd al-Khudrī

The Apostle of Allah ﷺ used to recite in every rak'ah of the first two rak'ahs of the noon prayer about thirty verses and in the last two about fifteen verses or half (of the first rak'ah) and in every rak'ah of the 'Asr prayer of the first two rak'ahs about fifteen verses and in the last two verses half (of the first ones). (Using translation from Muslim 452b)   

البيهقي:٢٤٧٨ – أَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أَخْبَرَنِي أَبُو النَّضْرِ الْفَقِيهُ ثنا مُحَمَّدُ بْنُ مُحَمَّدِ بْنِ رَجَاءٍ السَّنَدِيُّ ثنا شَيْبَانُ بْنُ أَبِي شَيْبَةَ ثنا أَبُو عَوَانَةَ عَنْ مَنْصُورِ بْنِ زَاذَانَ عَنِ الْوَلِيدِ أَبِي بِشْرٍ عَنْ أَبِي الصِّدِّيقِ النَّاجِيِّ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ

عَنِ النَّبِيِّ ﷺ كَانَ يَقْرَأُ فِي صَلَاةِ الظُّهْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ ثَلَاثِينَ آيَةً وَفِي الْأُخْرَيَيْنِ قَدْرَ خَمْسَ عَشْرَةَ آيَةً أَوْ قَالَ نِصْفَ ذَلِكَ وَفِي الْعَصْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ خَمْسَ عَشْرَةَ آيَةً وَفِي الْأُخْرَيَيْنِ قَدْرَ نِصْفِ ذَلِكَ  

رَوَاهُ مُسْلِمٌ فِي الصَّحِيحِ عَنْ شَيْبَانَ بْنِ أَبِي شَيْبَةَ

See similar narrations below:

Collected by Muslim, Aḥmad, Ibn Ḥibbān
muslim:452b – Shaybān b. Farrūkh > Abū ʿAwānah > Manṣūr > al-Walīd Abū Bishr > Abū al-Ṣiddīq al-Nājī > Abū Saʿīd al-Khudrī

The Apostle of Allah ﷺ used to recite in every rak'ah of the first two rak'ahs of the noon prayer about thirty verses and in the last two about fifteen verses or half (of the first rak'ah) and in every rak'ah of the 'Asr prayer of the first two rak'ahs about fifteen verses and in the last two verses half (of the first ones).  

مسلم:٤٥٢b – حَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ مَنْصُورٍ عَنِ الْوَلِيدِ أَبِي بِشْرٍ عَنْ أَبِي الصِّدِّيقِ النَّاجِيِّ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ

أَنَّ النَّبِيَّ ﷺ كَانَ يَقْرَأُ فِي صَلاَةِ الظُّهْرِ فِي الرَّكْعَتَيْنِ الأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ ثَلاَثِينَ آيَةً وَفِي الأُخْرَيَيْنِ قَدْرَ خَمْسَ عَشَرَةَ آيَةً أَوْ قَالَ نِصْفَ ذَلِكَ وَفِي الْعَصْرِ فِي الرَّكْعَتَيْنِ الأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ قِرَاءَةِ خَمْسَ عَشْرَةَ آيَةً وَفِي الأُخْرَيَيْنِ قَدْرَ نِصْفِ ذَلِكَ  

ahmad:11802 – Yūnus > Abū ʿAwānah > Manṣūr b. Zādhān > al-Walīd Abū Bishr > Abū al-Ṣiddīq > Abū Saʿīd al-Khudrī

[Machine] The Messenger of Allah ﷺ used to stand in the noon prayer for the first two units with the recitation of thirty verses in each unit. And in the last two units, he would recite fifteen verses in each unit. And he would stand in the afternoon prayer for the first two units with the recitation of fifteen verses in each unit. And in the last two units, he would recite half of that.  

أحمد:١١٨٠٢ – حَدَّثَنَا يُونُسُ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ مَنْصُورِ بْنِ زَاذَانَ عَنِ الْوَلِيدِ أَبِي بِشْرٍ عَنْ أَبِي الصِّدِّيقِ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ

كَانَ رَسُولُ اللهِ ﷺ يَقُومُ فِي الظُّهْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ قِرَاءَةِ ثَلَاثِينَ آيَةً وَفِي الْأُخْرَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ قِرَاءَةِ خَمْسَ عَشْرَةَ آيَةً وَكَانَ يَقُومُ فِي الْعَصْرِ فِي الرَّكْعَتَيْنِ الْأُولَتَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ قِرَاءَةِ خَمْسَ عَشْرَةَ آيَةً وَفِي الْأُخْرَتَيْنِ قَدْرَ نِصْفِ ذَلِكَ  

ذِكْرُ الْقَدْرِ الَّذِي يُقْرَأُ بِهِ فِي صَلَاةِ الظُّهْرِ وَالْعَصْرِ

ibnhibban:1825 – Muḥammad b. ʿAbdullāh b. al-Junayd > Qutaybah b. Saʿīd > Abū ʿAwānah > Manṣūr b. Zādhān > al-Walīd Abū Bishr > Abū al-Ṣiddīq > Abū Saʿīd al-Khudrī

[Machine] The Messenger of Allah ﷺ used to pray the Dhuhr prayer with the first two units consisting of reciting approximately thirty verses in each unit, and the last two units consisting of reciting approximately fifteen verses in each unit. And he used to pray the Asr prayer with the first two units consisting of reciting approximately fifteen verses in each unit, and the last two units consisting of reciting approximately half of that.  

ابن حبّان:١٨٢٥ – أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْجُنَيْدِ قَالَ حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ قَالَ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ مَنْصُورِ بْنِ زَاذَانَ عَنِ الْوَلِيدِ أَبِي بِشْرٍ عَنْ أَبِي الصِّدِّيقِ عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ قَالَ

«كَانَ رَسُولُ اللَّهِ ﷺ يَقُومُ فِي صَلَاةِ الظُّهْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ قَدْرَ قِرَاءَةِ ثَلَاثِينَ آيَةً فِي كُلِّ رَكْعَةٍ وَفِي الرَّكْعَتَيْنِ الْآخِرَتَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ قِرَاءَةِ خَمْسَ عَشْرَةَ آيَةً وَكَانَ يَقُومُ فِي الْعَصْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ خَمْسَ عَشْرَةَ آيَةً وَفِي الْآخِرَتَيْنِ فِي كُلِّ رَكْعَةٍ قَدْرَ نِصْفِ ذَلِكَ»