Sunan an-Nasa'i 1640
سنن النسائي#1640Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا زُهَيْرٌ، عَنْ أَبِي إِسْحَاقَ، قَالَ أَتَيْتُ الأَسْوَدَ بْنَ يَزِيدَ وَكَانَ لِي أَخًا صَدِيقًا فَقُلْتُ يَا أَبَا عَمْرٍو حَدِّثْنِي مَا حَدَّثَتْكَ بِهِ أُمُّ الْمُؤْمِنِينَ عَنْ صَلاَةِ رَسُولِ اللَّهِ صلى الله عليه وسلم . قَالَ قَالَتْ كَانَ يَنَامُ أَوَّلَ اللَّيْلِ وَيُحْيِي آخِرَهُ .
It was narrated that Abu Ishaq said:"I came to Al-Aswad bin Yazid, who was a close friend of mine and said: 'O Abu 'Amr, tell me what the Mother of the Believers told you about the prayer of the Messenger of Allah (ﷺ).' He said: 'She said: "He used to sleep for the first part of the night and stay up for the latter part
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Abu Ghuddah, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 20:43