Regarding boasting of one's lineage
باب فِي التَّفَاخُرِ بِالأَحْسَابِ
Sunan Abu Dawood, Book of General Behavior (Kitab Al-Adab)(view book)
Sunan Abu Dawood 5116
Narrated AbuHurayrah:
The Prophet ﷺ said: Allah, Most High, has removed from you the pride of the pre-Islamic period and its boasting in ancestors. One is only a pious believer or a miserable sinner. You are sons of Adam, and Adam came from dust. Let the people cease to boast about their ancestors. They are merely fuel in Jahannam; or they will certainly be of less account with Allah than the beetle which rolls dung with its nose.
حَدَّثَنَا مُوسَى بْنُ مَرْوَانَ الرَّقِّيُّ، حَدَّثَنَا الْمُعَافَى، ح وَحَدَّثَنَا أَحْمَدُ بْنُ سَعِيدٍ الْهَمْدَانِيُّ، أَخْبَرَنَا ابْنُ وَهْبٍ، - وَهَذَا حَدِيثُهُ - عَنْ هِشَامِ بْنِ سَعْدٍ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " إِنَّ اللَّهَ عَزَّ وَجَلَّ قَدْ أَذْهَبَ عَنْكُمْ عُبِّيَّةَ الْجَاهِلِيَّةِ وَفَخْرَهَا بِالآبَاءِ مُؤْمِنٌ تَقِيٌّ وَفَاجِرٌ شَقِيٌّ أَنْتُمْ بَنُو آدَمَ وَآدَمُ مِنْ تُرَابٍ لَيَدَعَنَّ رِجَالٌ فَخْرَهُمْ بِأَقْوَامٍ إِنَّمَا هُمْ فَحْمٌ مِنْ فَحْمِ جَهَنَّمَ أَوْ لَيَكُونُنَّ أَهْوَنَ عَلَى اللَّهِ مِنَ الْجِعْلاَنِ الَّتِي تَدْفَعُ بِأَنْفِهَا النَّتْنَ " .