Abu Bakrah reported: We were in the presence of the Messenger of Allah, peace be upon him, and he said, “Shall I inform you about the greatest of major sins? They are three: to associate partners with Allah, to disobey your parents, and to bear false witness (or he said) to speak falsely.” The Messenger of Allah, peace be upon him, was reclining and then he sat up, and he did not stop repeating this to the point that we wished he would stop.
[Sahih Muslim, Book 1, Number 158]
عَبْدُ الرَّحْمَنِ بْنُ أَبِي بَكْرَةَ عَنْ أَبِيهِ
قَالَ كُنَّا عِنْدَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ
فَقَالَ أَلَا أُنَبِّئُكُمْ بِأَكْبَرِ الْكَبَائِرِ ثَلَاثًا
الْإِشْرَاكُ بِاللَّهِ وَعُقُوقُ الْوَالِدَيْنِ وَشَهَادَةُ الزُّورِ
أَوْ قَوْلُ الزُّورِ وَكَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ
عَلَيْهِ وَسَلَّمَ مُتَّكِئًا فَجَلَسَ فَمَا زَالَ يُكَرِّرُهَا حَتَّى
قُلْنَا لَيْتَهُ سَكَتَ
صحيح مسلم كتاب الإيمان باب بيان الكبائر وأكبرها
