NASAI-KUBRA 336:
from Saʾalt ʿAlī b. Abū Ṭālib —
[Machine] About the Prophet's ﷺ prayer during the day after the obligatory prayers? He said, "Who can handle that?" Then he informed him, and said, "He used to pray two units of prayer when the sun rises, before midday he prays four units of prayer making the tasleem in the last unit, before noon he prays four units of prayer making the tasleem in the last unit, and after that he prays four units of prayer making the tasleem in the last unit."
الكبرى للنسائي ٣٣٦:
عن سءلت علي بن ابو طالب —
عَنْ صَلَاةِ رَسُولِ اللهِ ﷺ مِنَ النَّهَارِ بَعْدَ الْمَكْتُوبَةِ؟ قَالَ وَمَنْ يُطِيقُ ذَلِكَ؟ ثُمَّ أَخْبَرَهُ قَالَ «كَانَ يُصَلِّي حِينَ تَرْتَفِعُ الشَّمْسُ رَكْعَتَيْنِ وَقَبْلَ نِصْفِ النَّهَارِ أَرْبَعَ رَكَعَاتٍ يُجْعَلُ التَّسْلِيمَ فِي آخِرِ رَكْعَةٍ وَقَبْلَ الظُّهْرِ أَرْبَعَ رَكَعَاتٍ يُجْعَلُ التَّسْلِيمَ فِي آخِرِ رَكْعَةٍ وَبَعْدَهَا أَرْبَعَ رَكَعَاتٍ يُجْعَلُ التَّسْلِيمَ فِي آخِرِ رَكْعَةٍ»
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