'A'isha said, "I heard the Messenger of Allah ﷺ say, 'The arwah are a massed army. When they already know each other, they are friendly. When they do not know each other, they disagree.'"

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ الأرْوَاحُ جُنُودٌ مُجَنَّدَةٌ فَمَا تَعَارَفَ مِنْهَا ائْتَلَفَ وَمَا تَنَاكَرَ مِنْهَا اخْتَلَفَ

Abu Hurayra reported that the Messenger of Allah ﷺ said, "The spirits are massed armies. Those of them that knew one another are friendly. Those that did not know one another disagree."

قَالَ رَسُولُ اللهِ ﷺ الأرْوَاحُ جُنُودٌ مُجَنَّدَةٌ فَمَا تَعَارَفَ مِنْهَا ائْتَلَفَ وَمَا تَنَاكَرَ مِنْهَا اخْتَلَفَ