BUKHARI 6919:
from ʿAbd al-Raḥman b. Abū Bakrah from his father —
The Prophet. said, "The biggest of the great sins are: To join others in worship with Allah, to be undutiful to one's parents, and to give a false witness." He repeated it thrice, or said, "....a false statement," and kept on repeating that warning till we wished he would stop saying it. (See Hadith No.7, Vol. 8)
البخاري ٦٩١٩:
عن عبد الرحمن بن ابو بكره عن أبيه —
قَالَ النَّبِيُّ ﷺ أَكْبَرُ الْكَبَائِرِ الإِشْرَاكُ بِاللَّهِ وَعُقُوقُ الْوَالِدَيْنِ وَشَهَادَةُ الزُّورِ وَشَهَادَةُ الزُّورِ ثَلاَثًا أَوْ قَوْلُ الزُّورِ فَمَا زَالَ يُكَرِّرُهَا حَتَّى قُلْنَا لَيْتَهُ سَكَتَ