‘Amr ibn Maymun reported: Ibn Mas’ud, may Allah be pleased with him, said, “Verily, Satan went around a gathering that was remembering Allah to tempt them, but he was unable to cause separation between them. Then, he went towards a circle that was remembering the world and he provoked them until they killed each other.”
Source: al-Zuhd li-Aḥmad ibn Ḥanbal 755
عَنْ عَمْرِو بْنِ مَيْمُونٍ عَنِ ابْنِ مَسْعُودٍ رَحِمَهُ اللَّهُ قَالَ إِنَّ الشَّيْطَانَ أَطَافَ بِأَهْلِ مَجْلِسِ ذِكْرٍ لِيَفْتِنَهُمْ فَلَمْ يَسْتَطِعْ أَنْ يُفَرِّقَ بَيْنَهُمْ فَأَتَى عَلَى حَلَقَةٍ يَذْكُرُونَ الدُّنْيَا فَأَغْرَى بَيْنَهُمْ حَتَّى اقْتَتَلُوا
755 الزهد لأحمد بن حنبل