Sunan Ibn Majah 2101
سنن ابن ماجه#2101Sahihحَدَّثَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ بْنِ سَمُرَةَ، حَدَّثَنَا أَسْبَاطُ بْنُ مُحَمَّدٍ، عَنْ مُحَمَّدِ بْنِ عَجْلاَنَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ سَمِعَ النَّبِيُّ ـ صلى الله عليه وسلم ـ رَجُلاً يَحْلِفُ بِأَبِيهِ فَقَالَ " لاَ تَحْلِفُوا بِآبَائِكُمْ مَنْ حَلَفَ بِاللَّهِ فَلْيَصْدُقْ وَمَنْ حُلِفَ لَهُ بِاللَّهِ فَلْيَرْضَ وَمَنْ لَمْ يَرْضَ بِاللَّهِ فَلَيْسَ مِنَ اللَّهِ " .
It was narrated that Ibn 'Umar said:"The Messenger of Allah (ﷺ) heard a man taking an oath by his father and said: 'Do not make oaths by your forefathers. Whoever makes an oath by Allah, let him fulfill his oath, and if an oath is sworn for a person by Allah, let him accept it. Whoever is not content with Allah has nothing to do with Allah
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: 11:12