An-Nisa 4:94 يا ايها الذين امنوا اذا ضربتم في سبيل الله فتبينوا ولا تقولوا لمن القى اليكم السلام لست مومنا تبتغون عرض الحياة الدنيا فعند الله مغانم كثيرة كذالك كنتم من قبل فمن الله عليكم فتبينوا ان الله كان بما تعملون خبيرا ٩٤

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,"¹ 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.