Sahih al-Bukhari, Hadith 2654 ⓘ
Narrated Abu Bakra: The Prophet said thrice, "Should I inform you out the greatest of the great sins?" They said, "Yes, O Allah's Messenger!" He said, "To join others in worship with Allah and to be undutiful to one's parents." The Prophet then sat up after he had been reclining (on a pillow) and said, "And I warn you against giving a false witness, and he kept on saying that warning till we thought he would not stop. (See Hadith No. 7, Vol. 8)
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا بِشْرُ بْنُ الْمُفَضَّلِ، حَدَّثَنَا الْجُرَيْرِيُّ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرَةَ، عَنْ أَبِيهِ ـ رضى الله عنه ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " أَلاَ أُنَبِّئُكُمْ بِأَكْبَرِ الْكَبَائِرِ ". ثَلاَثًا. قَالُوا بَلَى يَا رَسُولَ اللَّهِ. قَالَ " الإِشْرَاكُ بِاللَّهِ، وَعُقُوقُ الْوَالِدَيْنِ ". وَجَلَسَ وَكَانَ مُتَّكِئًا فَقَالَ " أَلاَ وَقَوْلُ الزُّورِ ". قَالَ فَمَا زَالَ يُكَرِّرُهَا حَتَّى قُلْنَا لَيْتَهُ سَكَتَ. وَقَالَ إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ حَدَّثَنَا الْجُرَيْرِيُّ حَدَّثَنَا عَبْدُ الرَّحْمَنِ.
also referenced under: Book 52, Hadith 18 (In-Book) & Volume 3, Book 48, Hadith 822 (USC-MSA)