[Machine] That Abbas bin Abdul-Muttalib bin Hashim bin Abd Manaf is a cousin of Prophet Muhammad ﷺ. His mother is Nuteila bint Khabbab bin Kulayb bin Malik bin Amr bin Amr bin Zaid bin Manat bin Amir Al-Khazrajiya. Abbas was also known as Abu Al-Fadl. Al-Fadl was his eldest son. Abbas was three years older than Prophet Muhammad ﷺ. Abbas witnessed the conquests of Mecca, Hunayn, Taif, and Tabuk with Prophet Muhammad ﷺ. He stayed with him on the day of Hunayn with his family when people abandoned him.  

أَنَّ الْعَبَّاسَ بْنَ عَبْدِ الْمُطَّلِبِ بْنِ هَاشِمِ بْنِ عَبْدِ مَنَافٍ عَمَّ رَسُولِ اللَّهِ ﷺ أُمُّهُ نُتَيْلَةُ بِنْتُ خَبَّابِ بْنِ كُلَيْبِ بْنِ مَالِكِ بْنِ عَمْرِو بْنِ عَامِرِ بْنِ زَيْدِ مَنَاةَ بْنِ عَامِرٍ الْخَزْرَجِيِّةُ وَكَانَ الْعَبَّاسُ يُكَنَّى أَبَا الْفَضْلِ وَكَانَ الْفَضْلُ أَكْبَرَ مَنْ وَلَدِهِ وَكَانَ الْعَبَّاسُ أَكْبَرَ مِنْ رَسُولِ اللَّهِ ﷺ بِثَلَاثِ سِنِينَ وَشَهِدَ الْعَبَّاسُ مَعَ رَسُولِ اللَّهِ ﷺ فَتْحَ مَكَّةَ وَحُنَيْنًا وَالطَّائِفَ وَتَبُوكَ وَمَكَثَ مَعَهُ يَوْمَ حُنَيْنٍ فِي أَهْلِ بَيْتِهِ حِينَ انْكَشَفَ النَّاسُ عَنْهُ