يٰۤـاَيُّهَا الَّذِيۡنَ اٰمَنُوۡۤا اِذَا ضَرَبۡتُمۡ فِىۡ سَبِيۡلِ اللّٰهِ فَتَبَـيَّـنُوۡا وَلَا تَقُوۡلُوۡا لِمَنۡ اَ لۡقٰٓى اِلَيۡكُمُ السَّلٰمَ لَسۡتَ مُؤۡمِنًا ۚ تَبۡـتَـغُوۡنَ عَرَضَ الۡحَيٰوةِ الدُّنۡيَا فَعِنۡدَ اللّٰهِ مَغَانِمُ كَثِيۡرَةٌ ؕ كَذٰلِكَ كُنۡتُمۡ مِّنۡ قَبۡلُ فَمَنَّ اللّٰهُ عَلَيۡكُمۡ فَتَبَـيَّـنُوۡا ؕ اِنَّ اللّٰهَ كَانَ بِمَا تَعۡمَلُوۡنَ خَبِيۡرًا
Ya ayyuha allatheena amanooitha darabtum fee sabeeli Allahifatabayyanoo wala taqooloo liman alqa ilaykumu assalamalasta mu/minan tabtaghoona AAarada alhayatiaddunya faAAinda Allahi maghanimukatheeratun kathalika kuntum min qablu famanna AllahuAAalaykum fatabayyanoo inna Allaha kana bimataAAmaloona khabeera
O you who have believed, when you go forth to fight in the cause of Allāh, investigate; and do not say to one who gives you a greeting of peace, "You are not a believer," aspiring for the goods of worldly life; for with Allāh are many acquisitions. You yourselves were like that before; then Allāh conferred His favor i.e., guidance upon you, so investigate. Indeed Allāh is ever, of what you do, Aware.