The two righteous persons were about to be ruined. They were Abu Bakr and ʿUmar who raised their voices in the presence of the Prophet ﷺ when a mission from Bani Tamim came to him. One of the two recommended Al-Aqra' bin Habeas, the brother of Bani Mujashi (to be their governor) while the other recommended somebody else. (Nafiʿ, the sub-narrator said, I do not remember his name). Abu Bakr said to ʿUmar, "You wanted nothing but to oppose me!" ʿUmar said, "I did not intend to oppose you." Their voices grew loud in that argument, so Allah revealed: 'O you who believe! Raise not your voices above the voice of the Prophet.' (49.2) Ibn Az-Zubair said, "Since the revelation of this Verse, ʿUmar used to speak in such a low tone that the Prophet ﷺ had to ask him to repeat his statements." But Ibn Az-Zubair did not mention the same about his (maternal) grandfather (i.e. Abu Bakr).  

أَنْ يَهْلِكَا أَبَا بَكْرٍ وَعُمَرَ ؓ رَفَعَا أَصْوَاتَهُمَا عِنْدَ النَّبِيِّ ﷺ حِينَ قَدِمَ عَلَيْهِ رَكْبُ بَنِي تَمِيمٍ فَأَشَارَ أَحَدُهُمَا بِالأَقْرَعِ بْنِ حَابِسٍ أَخِي بَنِي مُجَاشِعٍ وَأَشَارَ الآخَرُ بِرَجُلٍ آخَرَ قَالَ نَافِعٌ لاَ أَحْفَظُ اسْمَهُ فَقَالَ أَبُو بَكْرٍ لِعُمَرَ مَا أَرَدْتَ إِلاَّ خِلاَفِي قَالَ مَا أَرَدْتُ خِلاَفَكَ فَارْتَفَعَتْ أَصْوَاتُهُمَا فِي ذَلِكَ فَأَنْزَلَ اللَّهُ {يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَرْفَعُوا أَصْوَاتَكُمْ} الآيَةَ قَالَ ابْنُ الزُّبَيْرِ فَمَا كَانَ عُمَرُ يُسْمِعُ رَسُولَ اللَّهِ ﷺ بَعْدَ هَذِهِ الآيَةِ حَتَّى يَسْتَفْهِمَهُ وَلَمْ يَذْكُرْ ذَلِكَ عَنْ أَبِيهِ يَعْنِي أَبَا بَكْرٍ  

Once the two righteous men, i.e., Abu Bakr and ʿUmar were on the verge of destruction (and that was because): When the delegate of Bani Tamim came to the Prophet, one of them (either Abu Bakr or ʿUmar) recommended Al-Aqra' bin HʿAbis at-Tamimi Al-Hanzali, the brother of Bani Majashi (to be appointed as their chief), while the other recommended somebody else. Abu Bakr said to ʿUmar, "You intended only to oppose me." ʿUmar said, "I did not intend to oppose you!" Then their voices grew louder in front of the Prophet ﷺ whereupon there was revealed: 'O you who believe! Do not raise your voices above the voice of the Prophet..a great reward.' (49.2-3) Ibn Az-Zubair said, 'Thence forward when ʿUmar talked to the Prophet, he would talk like one who whispered a secret and would even fail to make the Prophet ﷺ hear him, in which case the Prophet ﷺ would ask him (to repeat his words).  

أَنْ يَهْلِكَا أَبُو بَكْرٍ وَعُمَرُ لَمَّا قَدِمَ عَلَى النَّبِيِّ ﷺ وَفْدُ بَنِي تَمِيمٍ أَشَارَ أَحَدُهُمَا بِالأَقْرَعِ بْنِ حَابِسٍ الْحَنْظَلِيِّ أَخِي بَنِي مُجَاشِعٍ وَأَشَارَ الآخَرُ بِغَيْرِهِ فَقَالَ أَبُو بَكْرٍ لِعُمَرَ إِنَّمَا أَرَدْتَ خِلاَفِي فَقَالَ عُمَرُ مَا أَرَدْتُ خِلاَفَكَ فَارْتَفَعَتْ أَصْوَاتُهُمَا عِنْدَ النَّبِيِّ ﷺ فَنَزَلَتْ {يَا أَيُّهَا الَّذِينَ آمَنُوا لاَ تَرْفَعُوا أَصْوَاتَكُمْ} إِلَى قَوْلِهِ {عَظِيمٌ} قَالَ ابْنُ أَبِي مُلَيْكَةَ قَالَ ابْنُ الزُّبَيْرِ فَكَانَ عُمَرُ بَعْدُ وَلَمْ يَذْكُرْ ذَلِكَ عَنْ أَبِيهِ يَعْنِي أَبَا بَكْرٍ إِذَا حَدَّثَ النَّبِيَّ ﷺ بِحَدِيثٍ حَدَّثَهُ كَأَخِي السِّرَارِ لَمْ يُسْمِعْهُ حَتَّى يَسْتَفْهِمَهُ  

Once the two righteous men, i.e., Abu Bakr and ʿUmar were on the verge of destruction (and that was because): When the delegate of Bani Tamim came to the Prophet, one of them (either Abu Bakr or ʿUmar) recommended Al-Aqra' bin HʿAbis at-Tamimi Al-Hanzali, the brother of Bani Majashi (to be appointed as their chief), while the other recommended somebody else. Abu Bakr said to ʿUmar, "You intended only to oppose me." ʿUmar said, "I did not intend to oppose you!" Then their voices grew louder in front of the Prophet ﷺ whereupon there was revealed: 'O you who believe! Do not raise your voices above the voice of the Prophet..a great reward.' (49.2-3) Ibn Az-Zubair said, 'Thence forward when ʿUmar talked to the Prophet, he would talk like one who whispered a secret and would even fail to make the Prophet ﷺ hear him, in which case the Prophet ﷺ would ask him (to repeat his words). (Using translation from Bukhārī 7302)  

أَنْ يَهْلِكَا أَبُو بَكْرٍ وَعُمَرُ لَمَّا قَدِمَ عَلَى النَّبِيِّ ﷺ وَفْدُ بَنِي تَمِيمٍ أَشَارَ أَحَدُهُمَا بِالْأَقْرَعِ بْنِ حَابِسٍ الْحَنْظَلِيِّ أَخِي بَنِي مُجَاشِعٍ وَأَشَارَ الْآخَرُ بِغَيْرِهِ قَالَ أَبُو بَكْرٍ لِعُمَرَ إِنَّمَا أَرَدْتَ خِلَافِي فَقَالَ عُمَرُ مَا أَرَدْتُ خِلَافَكَ فَارْتَفَعَتْ أَصْوَاتُهُمَا عِنْدَ النَّبِيِّ ﷺ فَنَزَلَتْ {يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَرْفَعُوا أَصْوَاتَكُمْ فَوْقَ صَوْتِ النَّبِيِّ} [الحجرات 2] إِلَى قَوْلِهِ {عَظِيمٌ} [الحجرات 3] قَالَ ابْنُ أَبِي مُلَيْكَةَ قَالَ ابْنُ الزُّبَيْرِ فَكَانَ عُمَرُ بَعْدَ ذَلِكَ وَلَمْ يَذْكُرْ ذَلِكَ عَنْ أَبِيهِ يَعْنِي أَبَا بَكْرٍ إِذَا حَدَّثَ النَّبِيَّ ﷺ حَدَّثَهُ كَأَخِي السِّرَارِ لَمْ يَسْمَعْهُ حَتَّى يَسْتَفْهِمَهُ  

"Al-Aqra' bin Habis arrived to meet the Prophet ﷺ" - he said - "so Abu Bakr said: 'O Messenger of Allah! Appoint him over his people.' 'Umar said: 'Do not appoint him O Messenger of Allah!' They continued talking before the Prophet ﷺ until they raised their voices. Abu Bakr said to 'Umar: 'You only wanted to contradict me.' So ['Umar] said: 'I did not want to contradict you.'" He said: "So this Ayah was revealed: 'O you who believe! Do not raise your voices above the voice of the Prophet (49:2).'" He said: "After that, when 'Umar spoke before the Prophet ﷺ, his speech could not be heard until he told him he could not understand him." He (one of the narrators) said: "And Ibn Az-Zubair did not mention his grandfather" meaning Abu Bakr. (Using translation from Tirmidhī 3266)  

أَنَّ الْأَقْرَعَ بْنَ حَابِسٍ قَدِمَ عَلَى النَّبِيِّ ﷺ فَقَالَ أَبُو بَكْرٍ يَا رَسُولَ اللهِ اسْتَعْمِلْهُ عَلَى قَوْمِهِ فَقَالَ عُمَرُ لَا تَسْتَعْمِلْهُ يَا رَسُولَ اللهِ فَتَكَلَّمَا عِنْدَ النَّبِيِّ ﷺ حَتَّى ارْتَفَعَتْ أَصْوَاتُهُمَا فَقَالَ أَبُو بَكْرٍ لِعُمَرَ مَا أَرَدْتَ إِلَّا خِلَافِي قَالَ مَا أَرَدْتُ خِلَافَكَ قَالَ فَنَزَلَتْ {يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَرْفَعُوا أَصْوَاتَكُمْ فَوْقَ صَوْتِ النَّبِيِّ} وَكَانَ عُمَرُ بَعْدَ ذَلِكَ إِذَا تَكَلَّمَ عِنْدَ النَّبِيِّ ﷺ لَمْ يَسْمَعْ كَلَامَهُ حَتَّى يَسْتَفْهِمَهُ