حَدَّثَنَا 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 (PBUH) 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.' Translation Not Available
Book Ref: Sunan Ibn Majah Book 11 Hadith 2101
Web Ref: Sunan Ibn Majah Vol 3 Book 11 Hadith 2101