Narrated 'Abdullah bin Az-Zubair:
I said to my father, "I do not hear from you any narration (Hadith) of Allah's Apostle ﷺ as I hear (his narrations) from so and so?" Az-Zubair replied. I was always with him (the Prophet ﷺ) and I heard him saying "Whoever tells a lie against me (intentionally) then (surely) let him occupy, his seat in Hell-fire."
حَدَّثَنَا أَبُو الْوَلِيدِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ جَامِعِ بْنِ شَدَّادٍ، عَنْ عَامِرِ بْنِ عَبْدِ اللَّهِ بْنِ الزُّبَيْرِ، عَنْ أَبِيهِ، قَالَ قُلْتُ لِلزُّبَيْرِ إِنِّي لاَ أَسْمَعُكَ تُحَدِّثُ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم كَمَا يُحَدِّثُ فُلاَنٌ وَفُلاَنٌ. قَالَ أَمَا إِنِّي لَمْ أُفَارِقْهُ وَلَكِنْ سَمِعْتُهُ يَقُولُ
" مَنْ كَذَبَ عَلَىَّ فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ ".
Note by Muflihun.com
The word intentionally is not added by mistake or to misrepresent Prophet ﷺ wording. It is added by translator Sheikh Dr. Muhammad Muhsin Khan who translated Sahih al-Bukhari in English (Darussalām publications, July 1997, Vol 1, pg. 119). We have linked a supporting reference from Sahih al-Bukhari (next hadith, i.e, 108)