(49) باب الأَرْوَاحِ جُنُودٌ مُجَنَّدَةٌ
Abu Huraira reported Allah's Messenger (ﷺ) Saying:
Souls are troops collected together and those who familiarised with each other (in the heaven from where these come) would have affinity, with one another (in the world) and those amongst them who opposed each other (in the Heaven) would also be divergent (in the world).
Reference: Sahih Muslim 2638 a
In-book reference: Book 45, Hadith 204
USC-MSA web (English) reference(deprecated numbering scheme): Book 32, Hadith 6376