Sunan Ibn Majah 666
سنن ابن ماجه#666Sahihحَدَّثَنَا حَرْمَلَةُ بْنُ يَحْيَى، حَدَّثَنَا ابْنُ وَهْبٍ، ح وَحَدَّثَنَا ابْنُ حُمَيْدٍ، حَدَّثَنَا زَيْدُ بْنُ الْحُبَابِ، قَالاَ حَدَّثَنَا ابْنُ لَهِيعَةَ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، عَنْ عُمَرَ بْنِ الْخَطَّابِ، قَالَ رَأَى رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ رَجُلاً تَوَضَّأَ فَتَرَكَ مَوْضِعَ الظُّفْرِ عَلَى قَدَمِهِ فَأَمَرَهُ أَنْ يُعِيدَ الْوُضُوءَ وَالصَّلاَةَ . قَالَ فَرَجَعَ .
It was narrated that 'Umar bin Khattab said:"The Messenger of Allah saw a man performing ablution and he missed a spot the size of a fingernail on his foot. He commanded him to repeat the ablution and his prayer, so he did
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: 1:400