The Book of Zuhd and Softening of Hearts
Ṣaḥīḥ Muslim 7427
أَوْ غَيْرَ ذَلِكَ تَتَنَافَسُونَ ثُمَّ تَتَحَاسَدُونَ ثُمَّ تَتَدَابَرُونَ ثُمَّ تَتَبَاغَضُونَ أَوْ نَحْوَ ذَلِكَ ثُمَّ تَنْطَلِقُونَ فِي مَسَاكِينِ الْمُهَاجِرِينَ فَتَجْعَلُونَ بَعْضَهُمْ عَلَى رِقَابِ بَعْضٍ
aw ghayra dhalika tatanāfasūna thumma tataḥāsadūna thumma tatadābarūna thumma tatabāghaḍūna aw naḥwa dhalika thumma tanṭaliqūna fī masākīni al-muhājirīna fatajʿalūna baʿḍahum ʿalā riqābi baʿḍin
Transliteration generated from the Arabic vowel marks
The full narration
Abdullah b. `Amr b. al-`As reported that Allah's Messenger (ﷺ) said:How would you be, O people, when Persia and Rome would be conquered for you? `Abd ar-Rahman b `Auf said: We would say as Allah has commanded us and we would express our gratitude to Allah. Thereupon Allah's Messenger (ﷺ) said: Nothing else besides it? You would (in fact) vie with one another, then you would feel jealous, then your relations would be estranged and then you will bear enmity against one another, or something to the same effect. Then you would go to the poor emigrants and would make some the masters of the others
Source
Ṣaḥīḥ Muslim · 7427