Sunan Ibn Majah 1706
سنن ابن ماجه#1706Sahihحَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ مِسْعَرٍ، وَسُفْيَانَ، عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ، عَنْ أَبِي الْعَبَّاسِ الْمَكِّيِّ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، قَالَ: قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " لاَ صَامَ مَنْ صَامَ الأَبَدَ " .
It was narrated from ‘Abdullah bin ‘Amr that the Messenger of Allah (ﷺ) said:“There is no fasting for one who fasts continually.”
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:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih - Bukhari And Muslim
In-book reference: 7:69