[Machine] The Prophet ﷺ used to pray with the Hajir or Hijra prayer, and it was the heaviest prayer on his companions. Then the verse was revealed: "Guard strictly (five obligatory) prayers, especially the middle prayer" [Quran 2:238]. He said: because before it and after it are two prayers, and likewise.
أَنَّ النَّبِيَّ ﷺ كَانَ يُصَلِّي بِالْهَجِيرِ أَوْ بِالْهَاجِرَةِ وَكَانَتْ أَثْقَلَ الصَّلَاةِ عَلَى أَصْحَابِهِ فَنَزَلَتْ {حَافِظُوا عَلَى الصَّلَوَاتِ وَالصَّلَاةِ الْوُسْطَى وَقُومُوا لِلَّهِ قَانِتِينَ} [البقرة 238] قَالَ لِأَنَّ قَبْلَهَا صَلَاتَيْنِ وَبَعْدَهَا صَلَاتَيْنِ وَكَذَلِكَ