كتاب البر والصلة والآداب
45  
The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
(49)
Chapter: Souls Are Like Conscripted Soldiers
(49)
باب الأَرْوَاحِ جُنُودٌ مُجَنَّدَةٌ ‏ ‏
Sahih Muslim 2638 a

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).
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا عَبْدُ الْعَزِيزِ، - يَعْنِي ابْنَ مُحَمَّدٍ - عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ الأَرْوَاحُ جُنُودٌ مُجَنَّدَةٌ فَمَا تَعَارَفَ مِنْهَا ائْتَلَفَ وَمَا تَنَاكَرَ مِنْهَا اخْتَلَفَ ‏"‏ ‏.‏
Reference : Sahih Muslim 2638a
In-book reference : Book 45, Hadith 204
USC-MSA web (English) reference : Book 32, Hadith 6376
  (deprecated numbering scheme)