Sunan an-Nasa'i 2398
سنن النسائي#2398Da'ifأَخْبَرَنَا عَلِيُّ بْنُ الْحُسَيْنِ، قَالَ حَدَّثَنَا أُمَيَّةُ، عَنْ شُعْبَةَ، عَنْ حَبِيبٍ، قَالَ حَدَّثَنِي أَبُو الْعَبَّاسِ، - وَكَانَ رَجُلاً مِنْ أَهْلِ الشَّامِ وَكَانَ شَاعِرًا وَكَانَ صَدُوقًا - عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو قَالَ قَالَ لِي رَسُولُ اللَّهِ صلى الله عليه وسلم وَسَاقَ الْحَدِيثَ .
It was narrated that 'Abdullah bin 'Amr said:"The Messenger of Allah said to me" and he quoted the same Hadith. 'Ata said: "someone who heard him told me that Ibn 'Umar (said) that the Prophet said: 'Whoever fasts every day of his life, then he has not fasted
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: 22:309