that the Prophet ﷺ said: "The major sins are associating others with Allah, disobeying the parents" or he said, "the false oath". Shu'bah (a narrator in the chain) was in doubt.
عَنِ النَّبِيِّ ﷺ قَالَ الْكَبَائِرُ الإِشْرَاكُ بِاللَّهِ وَعُقُوقُ الْوَالِدَيْنِ أَوْ قَالَ الْيَمِينُ الْغَمُوسُ شَكَّ شُعْبَةُ