Arabic (Original)
حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ عَنْ عُبَيْدِ اللَّهِ أَخْبَرَنِي نَافِعٌ عَنِ ابْنِ عُمَرَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَدْرَكَ عُمَرَ وَهُوَ فِي رَكْبٍ وَهُوَ يَحْلِفُ بِأَبِيهِ فَقَالَ لَا تَحْلِفُوا بِآبَائِكُمْ لِيَحْلِفْ حَالِفٌ بِاللَّهِ أَوْ لِيَسْكُتْ.
English Translation
Yahya ibn Sa'id narrated to us, from 'Ubaydullah: Nafi' informed me, from Ibn 'Umar, that the Messenger of Allah, peace and blessings be upon him, caught up with 'Umar while he was among a party of riders swearing by his father, and he said: "Do not swear by your fathers; whoever must swear an oath, let him swear by Allah, or else remain silent."