Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: Some Muslims lived with the polytheists and they increased the numbers of the polytheists. Then an arrow would come from some shooting and strike one of them and kill him, or he would be struck and killed. So Allah, the Mighty and Majestic, revealed concerning them this verse: "Indeed, those whose souls the angels take while they are wronging themselves, they say to them: 'In what condition were you?' They say: 'We were oppressed in the land.'" [Surah Al-Nisa: 97] to the end of the verse.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 11456