Regarding taking revenge
حَدَّثَنَا عَبْدُ الأَعْلَى بْنُ حَمَّادٍ، حَدَّثَنَا سُفْيَانُ، عَنِ ابْنِ عَجْلاَنَ، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَجُلاً، كَانَ يَسُبُّ أَبَا بَكْرٍ وَسَاقَ نَحْوَهُ . قَالَ أَبُو دَاوُدَ وَكَذَلِكَ رَوَاهُ صَفْوَانُ بْنُ عِيسَى عَنِ ابْنِ عَجْلاَنَ، كَمَا قَالَ سُفْيَانُ .
The tradition mentioned above has also been transmitted by Abu Hurairah through a different chain of narrators. This version has: A man was reviling Abu Bakr. He then mentioned the rest of the tradition in a similar manner. Abu Dawud said: Similarly, it has been transmitted by Safwan b. ‘Isa, from Ibn ‘Affan, as Sufyan said.