[Machine] I accompanied the Prophet ﷺ from Arafat, and he continued to perform the talbiyah until he threw the pebbles at the Jamrat al-Aqabah. He would say the takbeer with each pebble and then stop the talbiyah after the last pebble. The Sheikh said: His takbeer with each pebble is like a signal for him to stop the talbiyah after the first pebble, as we have narrated in the hadith of Abdullah ibn Mas'ud when he said: "He continues to perform the talbiyah until he throws the pebbles at the Jamrat." Regarding the narration of Fadl ibn Abbas's additional statement, it is considered strange and was narrated by Muhammad ibn Ishaq ibn Khuzaymah, who chose it, but it is not among the well-known narrations from Ibn Abbas regarding Fadl ibn Abbas. Allah knows best.  

أَفَضْتُ مَعَ النَّبِيِّ ﷺ مِنْ عَرَفَاتٍ فَلَمْ يَزَلْ يُلَبِّي حَتَّى رَمَى جَمْرَةَ الْعَقَبَةِ يُكَبِّرُ مَعَ كُلِّ حَصَاةٍ ثُمَّ قَطَعَ التَّلْبِيَةَ مَعَ آخِرِ حَصَاةٍ قَالَ الشَّيْخُ تَكْبِيرُهُ مَعَ كُلِّ حَصَاةٍ كَالدِّلَالَةِ عَلَى قَطْعِهِ التَّلْبِيَةَ بِأَوَّلِ حَصَاةٍ كَمَا رُوِّينَا فِي حَدِيثِ عَبْدِ اللهِ بْنِ مَسْعُودٍ وَقَوْلُهُ يُلَبِّي حَتَّى رَمَى الْجَمْرَةَ أَرَادَ بِهِ حَتَّى أَخَذَ فِي رَمْيِ الْجَمْرَةِ وَأَمَّا مَا فِي رِوَايَةِ الْفَضْلِ بْنِ عَبَّاسٍ مِنَ الزِّيَادَةِ فَإِنَّهَا غَرِيبَةٌ أَوْرَدَهَا مُحَمَّدُ بْنُ إِسْحَاقَ بْنِ خُزَيْمَةَ وَاخْتَارَهَا وَلَيْسَتْ فِي الرِّوَايَاتِ الْمَشْهُورَةِ عَنِ ابْنِ عَبَّاسٍ عَنِ الْفَضْلِ بْنِ عَبَّاسٍ فَاللهُ أَعْلَمُ