It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: "Souls (human spirits) are like assembled armies; those of them that became acquainted (in the world of souls) form bonds of affection and harmony (in this world too), and those that remained strangers there remain at variance and disagreement (in this world too)."
It is mawquf and sahih (authentic).
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب بدء الخلق / 3435
Hadith Gradingمحدثین:إسناده صحيح، موقوف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :قال ابن حجر: مَوْقُوفٌ صَحِيحٌ . » «أخرجه المعجم الكبير للطبراني برقم: 8912»