BAYHAQI 4914:
from Saʾalnā ʿAlī —
[Machine] About the voluntary prayers of the Messenger of Allah ﷺ during the day, he asked us, "Who is able to do it?" We said, "We can handle what we can handle." He said, "The Prophet ﷺ used to delay after Fajr prayer until the sun rose, which is the duration of Dhuhr, and then he would perform two units of prayer, in which he would conclude with the salutation upon the angels who are nearest to Allah, the prophets, and those who followed them among the believers and Muslims. Then he would delay until the time of Duha, and then he would perform four units of prayer, in which he would conclude with the salutation upon the angels who are nearest to Allah, the prophets, and those who followed them among the believers and Muslims. Then he would delay until the sun had passed its zenith, and then he would perform four units of prayer, in which he would conclude with the salutation upon the angels who are nearest to Allah, the prophets, and those who followed them among the believers and Muslims. Then he would pray two units of prayer after Dhuhr, in which he would do the same. Then he would pray four units of prayer before Asr, in which he would do the same. And likewise.
البيهقي ٤٩١٤:
عن سءلنا علي —
عَنْ تَطَوَّعِ رَسُولِ اللهِ ﷺ بِالنَّهَارِ فَقَالَ لَنَا وَمَنْ يُطِيقُهُ؟ قُلْنَا حَدِّثْنَاهُ نُطِيقُ مِنْهُ مَا أَطَقْنَا قَالَ كَانَ النَّبِيُّ ﷺ يُمْهِلُ إِذَا صَلَّى الْفَجْرَ حَتَّى إِذَا ارْتَفَعَتِ الشَّمْسُ فَكَانَ مِقْدَارُهَا مِنَ الْعَصْرِ قَامَ فَصَلَّى رَكْعَتَيْنِ يَفْصِلُ فِيهِمَا بِالتَّسْلِيمِ عَلَى الْمَلَائِكَةِ الْمُقَرَّبِينَ وَالنَّبِيِّينَ وَمَنْ تَبِعَهُمْ مِنَ الْمُؤْمِنِينَ وَالْمُسْلِمِينَ ثُمَّ يُمْهِلُ حَتَّى إِذَا ارْتَفَعَ الضُّحَى فَكَانَ مِقْدَارُهَا مِنَ الظُّهْرِ قَامَ فَصَلَّى أَرْبَعًا يَفْصِلُ فِيهِنَّ بِالتَّسْلِيمِ عَلَى الْمَلَائِكَةِ الْمُقَرَّبِينَ وَالنَّبِيِّينَ وَمَنْ تَبِعَهُمْ مِنَ الْمُؤْمِنِينَ وَالْمُسْلِمِينَ ثُمَّ يُمْهِلُ فَإِذَا زَالَتِ الشَّمْسُ قَامَ فَصَلَّى أَرْبَعًا يَفْصِلُ فِيهِنَّ بِالتَّسْلِيمِ عَلَى الْمَلَائِكَةِ الْمُقَرَّبِينَ وَالنَّبِيِّينَ وَمَنْ تَبِعَهُمْ مِنَ الْمُؤْمِنِينَ وَالْمُسْلِمِينَ ثُمَّ يُصَلِّي رَكْعَتَيْنِ بَعْدَ الظُّهْرِ يَفْعَلُ فِيهِمَا مِثْلَ ذَلِكَ ثُمَّ يُصَلِّي أَرْبَعًا قَبْلَ الْعَصْرِ يَفْعَلُ فِيهِنَّ مِثْلَ ذَلِكَ وَكَذَلِكَ
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