[Machine] The Messenger of Allah ﷺ used to recite longer in the first two units of the Dhuhr prayer and shorten in the second two units, and he would do the same in the Fajr prayer.  

كَانَ رَسُولُ اللهِ ﷺ يَقْرَأُ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنْ صَلَاةِ الظُّهْرِ يُطِيلُ فِي الْأُولَى وَيُقَصِّرُ فِي الثَّانِيَةِ وَيَفْعَلُ ذَلِكَ فِي صَلَاةِ الصُّبْحِ  

[Machine] The Prophet ﷺ used to recite in the noon and afternoon prayers, in the first two units, from the beginning of the Quran and two Surahs. In the last two units, he would recite from the beginning of the Quran. Sometimes, he would also recite a verse aloud. He would make the first unit longer than the second unit. He would do the same in the evening prayer and in the morning prayer.  

أَنَّ النَّبِيَّ ﷺ كَانَ يَقْرَأُ فِي الظُّهْرِ وَالْعَصْرِ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ بِأُمِّ الْكِتَابِ وَسُورَتَيْنِ وَفِي الرَّكْعَتَيْنِ الْأُخْرَيَيْنِ بِأُمِّ الْكِتَابِ وَكَانَ يُسْمِعُنَا أَحْيَانًا الْآيَةَ وَكَانَ يُطِيلُ فِي الرَّكْعَةِ الْأُولَى وَلَا يُطِيلُ فِي الثَّانِيَةِ وَهَكَذَا فِي الْعَصْرِ وَهَكَذَا فِي الصُّبْحِ  

[Machine] The Prophet ﷺ used to stand in the first rakah of Dhuhr prayer until he could not hear the sound of footsteps. It is said that this man is Tarafah Al-Hadrami.  

أَنَّ النَّبِيَّ ﷺ كَانَ يَقُومُ فِي الرَّكْعَةِ الْأُولَى مِنَ الظُّهْرِ حَتَّى لَا يَسْمَعُ وَقْعَ قَدَمٍ يُقَالُ هَذَا الرَّجُلُ هُوَ طَرَفَةُ الْحَضْرَمِيُّ  

[Machine] The Prophet ﷺ used to pray Dhuhr with us when the sun started to decline and if you had placed a leather pad during Ramadan, it would have been cooked. He used to prolong the first unit of Dhuhr prayer while standing, as long as he could hear the footsteps of the people's sandals, then he would make the second unit shorter than the first, the third shorter than the second, and the fourth shorter than the third. He used to pray Asr with us for the distance a horse can travel in two or three farsakhs. He used to prolong the first unit of Asr prayer and make the second unit shorter than the first, the third shorter than the second, and the fourth shorter than the third. He used to pray Maghrib with us when someone would say, "The sun has set," and someone else would say, "It has not set." He used to prolong the first unit of Maghrib prayer and make the second unit shorter than the first, the third shorter than the second, and the fourth shorter than the third. He used to delay the final unit of Isha prayer for a while.  

كَانَ النَّبِيُّ ﷺ يُصَلِّي بِنَا الظُّهْرَ حِينَ تَزُولُ الشَّمْسُ وَلَوْ جَعَلْتَ جَنَبًا فِي الرَّمْضَاءِ لَأَنْضَجَتْهُ وَكَانَ يُطِيلُ الرَّكْعَةَ الْأُولَى مِنَ الظُّهْرِ فَلَا يَزَالُ يَقْرَأُ قَائِمًا مَا دَامَ يَسْمَعُ خَفْقَ نِعَالِ الْقَوْمِ وَيَجْعَلُ الرَّكْعَةَ الثَّانِيَةَ أَقْصَرَ مِنَ الْأُولَى وَالثَّالِثَةَ أَقْصَرَ مِنَ الثَّانِيَةِ وَالرَّابِعَةَ أَقْصَرَ مِنَ الثَّالِثَةِ وَكَانَ يُصَلِّي بِنَا الْعَصْرَ قَدْرَ مَا يَسِيرُ السَّائِرُ فَرْسَخَيْنِ أَوْ ثَلَاثَةً وَكَانَ يُطِيلُ الرَّكْعَةَ الْأُولَى مِنَ الْعَصْرِ وَالثَّانِيَةُ أَقْصَرُ مِنَ الْأُولَى وَالثَّالِثَةُ أَقْصَرُ مِنَ الثَّانِيَةِ وَالرَّابِعَةُ أَقْصَرُ مِنَ الثَّالِثَةِ وَكَانَ يُصَلِّي بِنَا الْمَغْرِبَ حِينَ يَقُولُ الْقَائِلُ غَرَبَتِ الشَّمْسُ وَقَائِلٌ يَقُولُ لَمْ تَغْرُبْ وَكَانَ يُطِيلُ الرَّكْعَةَ الْأُولَى مِنَ الْمَغْرِبِ وَالثَّانِيَةُ أَقْصَرُ مِنَ الْأُولَى وَالثَّالِثَةُ أَقْصَرُ مِنَ الثَّانِيَةِ وَكَانَ يُؤَخِّرُ الْعِشَاءَ الْآخِرَةَ شَيْئًا  

The noon prayer would start and one would go to al-Baqi' and after having relieved himself he would perform ablution and then come, while the Messenger of Allah ﷺ would be in the first rak'ah, because he would prolong it so much. (Using translation from Muslim 454a)   

لَقَدْ كَانَتْ صَلَاةُ الظُّهْرِ تُقَامُ لِرَسُولِ اللهِ ﷺ فَيَذْهَبُ الذَّاهِبُ إِلَى الْبَقِيعِ فَيَقْضِي حَاجَتَهُ ثُمَّ يَتَوَضَّأُ ثُمَّ يَأْتِي وَرَسُولُ اللهِ ﷺ فِي الرَّكْعَةِ الْأُولَى مِمَّا يُطَوِّلُهَا