Sunan Ibn Majah 1737
سنن ابن ماجه#1737Sahihحَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ ذُكِرَ عِنْدَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ يَوْمُ عَاشُورَاءَ فَقَالَ: رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " كَانَ يَوْمًا يَصُومُهُ أَهْلُ الْجَاهِلِيَّةِ. فَمَنْ أَحَبَّ مِنْكُمْ أَنْ يَصُومَهُ فَلْيَصُمْهُ، وَمَنْ كَرِهَهُ فَلْيَدَعْهُ " .
It was narrated from ‘Abdullah bin ‘Umar that the Day of ‘Ashura’ was mentioned in the presence of the Messenger of Allah (ﷺ). The Messenger of Allah (ﷺ) said:“That was a day when the people of the Ignorance used to fast. So whoever among you wants to fast may do so, and whoever does not want to may leave it.”
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 Muhammad Fouad Abd al-Baqi, 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: 7:100