Sunan an-Nasa'i 875
سنن النسائي#875Hasanأَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ الرَّحْمَنِ، قَالَ حَدَّثَنَا حُصَيْنُ بْنُ عَبْدِ الرَّحْمَنِ، عَنْ أَبِي إِسْحَاقَ، عَنْ عَاصِمِ بْنِ ضَمْرَةَ، قَالَ سَأَلْتُ عَلِيَّ بْنَ أَبِي طَالِبٍ عَنْ صَلاَةِ، رَسُولِ اللَّهِ صلى الله عليه وسلم فِي النَّهَارِ قَبْلَ الْمَكْتُوبَةِ قَالَ مَنْ يُطِيقُ ذَلِكَ ثُمَّ أَخْبَرَنَا قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُصَلِّي حِينَ تَزِيغُ الشَّمْسُ رَكْعَتَيْنِ وَقَبْلَ نِصْفِ النَّهَارِ أَرْبَعَ رَكَعَاتٍ يَجْعَلُ التَّسْلِيمَ فِي آخِرِهِ .
It was narrated from Abu Ishaq, that Asim bin Damrah said:"I asked 'Ali bin Abi Talib about the prayer of the Messenger of Allah (ﷺ) during the day before the prescribed prayers. He said: 'Who is able to do that?' Then he told us:'The Messenger of Allah (ﷺ) used to pray two Rak'ahs when the sun had passed its zenith, and four Rak'ahs before the middle of the day, with the Taslim at the end
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 10:99