يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا ضَرَبْتُمْ فِى سَبِيلِ ٱللَّهِ فَتَبَيَّنُوا۟ وَلَا تَقُولُوا۟ لِمَنْ أَلْقَىٰٓ إِلَيْكُمُ ٱلسَّلَٰمَ لَسْتَ مُؤْمِنًۭا تَبْتَغُونَ عَرَضَ ٱلْحَيَوٰةِ ٱلدُّنْيَا فَعِندَ ٱللَّهِ مَغَانِمُ كَثِيرَةٌۭ ۚ كَذَٰلِكَ كُنتُم مِّن قَبْلُ فَمَنَّ ٱللَّهُ عَلَيْكُمْ فَتَبَيَّنُوٓا۟ ۚ إِنَّ ٱللَّهَ كَانَ بِمَا تَعْمَلُونَ خَبِيرًۭا
How to read it
Yā'ayyuhā -lladhīna 'āmanū 'idhā ḍarab'tum' fī sabīli -llahi fatabayyanū walā taqūlū liman' 'al'qā 'ilay'kumu ssalāma las'ta mu''minan tab'taghūna ʻaraḍa l-ḥayāti ddun'yā faʻinda -llahi maghānimu kathīratun . kadhālika kuntum mmin qab'lu famanna -llahu ʻalay'kum' fatabayyanū . 'inna -llaha kāna bimā taʻ'malūna khabīran
O ye who believe! When ye go abroad in the cause of Allah, investigate carefully, and say not to any one who offers you a salutation: "Thou art none of a believer!" Coveting the perishable goods of this life: with Allah are profits and spoils abundant. Even thus were ye yourselves before, till Allah conferred on you His favours: Therefore carefully investigate. For Allah is well aware of all that ye do.
Translation: Abdullah Yusuf Ali
