عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا قَالَ أَيُّوبُ لَا أَعْلَمُهُ إِلَّا عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ مَنْ حَلَفَ فَاسْتَثْنَى فَهُوَ بِالْخِيَارِ إِنْ شَاءَ أَنْ يَمْضِيَ عَلَى يَمِينِهِ وَإِنْ شَاءَ أَنْ يَرْجِعَ غَيْرَ حِنْثٍ أَوْ قَالَ غَيْرَ حَرَجٍ
It is narrated from Sayyiduna Abdullah bin Umar, may Allah be pleased with them both, that the Messenger of Allah, peace and blessings be upon him, said: Whoever takes an oath but makes an exception along with it, then he has the choice; if he wishes, he may enforce his oath, and if he wishes, he may not fulfill the requirement of the oath. This will not break his oath, or he said: There is no harm in it.