[Machine] We used to observe the Prophet's ﷺ standing in prayer during the noon and afternoon prayers. We would observe his standing in the first two units of the noon prayer, equivalent to the recitation of Surah Sajdah, and we would observe his standing in the last two units to the extent of half of that. We would also observe his standing in the first two units of the afternoon prayer, equivalent to his standing in the last two units of the noon prayer, and in the last two units to the extent of half of that. This is according to the narration of Yahya ibn Yahya, and in the narration of Musaddad, it is mentioned to the extent of thirty verses, and the rest is similar in meaning.  

كُنَّا نُحْرِزُ قِيَامَ رَسُولِ اللهِ ﷺ فِي الظُّهْرِ وَالْعَصْرِ فَحَرَزْنَا قِيَامَهُ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنَ الظُّهْرِ قَدْرَ قِرَاءَةِ الم تَنْزِيلُ السَّجْدَةِ وَحَرَزْنَا قِيَامَهُ فِي الْأُخْرَيَيْنِ قَدْرَ نِصْفٍ مِنْ ذَلِكَ وَحَرَزْنَا قِيَامَهُ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنَ الْعَصْرِ عَلَى قَدْرِ قِيَامِهِ فِي الْأُخْرَيَيْنِ مِنَ الظُّهْرِ وَفِي الْأُخْرَيَيْنِ عَلَى النِّصْفِ مِنْ ذَلِكَ لَفْظُ حَدِيثِ يَحْيَى بْنِ يَحْيَى وَفِي حَدِيثِ مُسَدَّدٍ عَلَى قَدْرِ ثَلَاثِينَ آيَةً وَالْبَاقِي بِمَعْنَاهُ  

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)   

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  

[Machine] He arrived in the city during the caliphate of Abu Bakr al-Siddiq, and he prayed behind Abu Bakr al-Maghrib. Abu Bakr recited in the first two units of prayer from the mother of the Quran and a surah from the shorter, detailed ones. Then he stood for the third unit of prayer and I approached him until my clothes almost touched his clothes. I heard him recite from the mother of the Quran and this verse: "Our Lord, let not our hearts deviate after You have guided us and grant us from Yourself mercy. Indeed, You are the Bestower" [Al-Imran 8]. Abu Sa'id added in his narration, Shafi'i said and Sufyan ibn 'Uyaynah said, when 'Umar ibn Abd al-Aziz heard this from Abu Bakr al-Siddiq, he said, "If I hadn't heard this before, I would have taken it."  

أَنَّهُ قَدِمَ الْمَدِينَةَ فِي خِلَافَةِ أَبِي بَكْرٍ الصِّدِّيقِ ؓ فَصَلَّى وَرَاءَ أَبِي بَكْرٍ الْمَغْرِبَ فَقَرَأَ أَبُو بَكْرٍ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ بِأُمِّ الْقُرْآنِ وَسُورَةٍ سُورَةٍ مِنْ قِصَارِ الْمُفَصَّلِ ثُمَّ قَامَ فِي الرَّكْعَةِ الثَّالِثَةِ قَالَ فَدَنَوْتُ مِنْهُ حَتَّى إِنَّ ثِيَابِي لَتَكَادُ أَنْ تَمَسَّ ثِيَابَهُ فَسَمِعْتُهُ قَرَأَ بِأُمِّ الْقُرْآنِ وَهَذِهِ الْآيَةِ {رَبَّنَا لَا تُزِغْ قُلُوبَنَا بَعْدَ إِذْ هَدَيْتَنَا وَهَبْ لَنَا مِنْ لَدُنْكَ رَحْمَةً إِنَّكَ أَنْتَ الْوَهَّابُ} [آل عمران 8] زَادَ أَبُو سَعِيدٍ فِي رِوَايَتِهِ قَالَ الشَّافِعِيُّ وَقَالَ سُفْيَانُ بْنُ عُيَيْنَةَ لَمَّا سَمِعَ عُمَرُ بْنُ عَبْدِ الْعَزِيزِ بِهَذَا عَنْ أَبِي بَكْرٍ الصِّدِّيقِ ؓ قَالَ إِنْ كُنْتُ لَعَلَى غَيْرِ هَذَا حَتَّى سَمِعْتُ بِهَذَا فَأَخَذْتُ بِهِ  

[Machine] Abdullah bin Umar used to recite in all four units of prayer, in each unit, Surah Al-Fatiha and another Surah. Sometimes he would recite two or three Surahs in a single unit of the obligatory prayer. He would also recite Surah Al-Fatiha and another Surah in the two units of the Maghrib prayer. These details are mentioned in the narration of Ibn Bukair, and Al-Shafi'i did not mention anything specifically about the Maghrib prayer.  

أَنَّ عَبْدَ اللهِ بْنَ عُمَرَ كَانَ إِذَا صَلَّى وَحْدَهُ يَقْرَأُ فِي الْأَرْبَعِ جَمِيعًا فِي كُلِّ رَكْعَةٍ بِأُمِّ الْقُرْآنِ وَسُورَةٍ وَكَانَ أَحْيَانًا يَقْرَأُ بِالسُّورَتَيْنِ وَالثَّلَاثِ فِي الرَّكْعَةِ الْوَاحِدَةِ فِي صَلَاةِ الْفَرِيضَةِ وَيَقْرَأُ فِي الرَّكْعَتَيْنِ مِنَ الْمَغْرِبِ كَذَلِكَ بِأُمِّ الْقُرْآنِ وَسُورَةٍ سُورَةٍ لَفْظُ حَدِيثِ ابْنِ بُكَيْرٍ وَلَمْ يَذْكُرِ الشَّافِعِيُّ الْمَغْرِبَ