[Machine] The Prophet ﷺ used to recite in the first two units of Dhuhr prayer an ayah that we could hear sometimes, then he would prolong the first unit and shorten the second. And he would recite in the first two units of Asr prayer while prolonging the first unit, and he would recite in the first unit of Fajr prayer while prolonging it and shorten the second unit.
كَانَ رَسُولُ اللهِ ﷺ يَقْرَأُ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنَ الظُّهْرِ يُسْمِعُنَا الْآيَةَ أَحْيَانًا فَيُطِيلُ فِي الرَّكْعَةِ الْأُولَى وَيُقَصِّرُ فِي الثَّانِيَةِ وَيَقْرَأُ فِي الرَّكْعَتَيْنِ الْأُولَيَيْنِ مِنَ الْعَصْرِ وَيُطِيلُ فِي الرَّكْعَةِ الْأُولَى مِنَ الْفَجْرِ وَيُقَصِّرُ فِي الثَّانِيَةِ