[Machine] The Messenger of Allah ﷺ met Umar during one of his journeys, and he was saying: "And my father, and my father." So he said: "Verily, Allah forbids you from swearing by your fathers. So whoever swears, let him swear by Allah, or be silent."
أَدْرَكَ رَسُولُ اللهِ ﷺ عُمَرَ وَهُوَ فِي بَعْضِ أَسْفَارِهِ وَهُوَ يَقُولُ وَأَبِي وَأَبِي فَقَالَ إِنَّ اللهَ يَنْهَاكُمْ أَنْ تَحْلِفُوا بِآبَائِكُمْ فَمَنْ كَانَ حَالِفًا فَلْيَحْلِفْ بِاللهِ أَوْ لِيَصْمُتْ