AN NISAA' — Ayat 94
يَا أَيُّهَا الَّذِينَ آمَنُواْ إِذَا ضَرَبْتُمْ فِي سَبِيلِ اللّهِ فَتَبَيَّنُواْ وَلاَ تَقُولُواْ لِمَنْ أَلْقَى إِلَيْكُمُ السَّلاَمَ لَسْتَ مُؤْمِنًا تَبْتَغُونَ عَرَضَ الْحَيَاةِ الدُّنْيَا فَعِندَ اللّهِ مَغَانِمُ كَثِيرَةٌ كَذَلِكَ كُنتُم مِّن قَبْلُ فَمَنَّ اللّهُ عَلَيْكُمْ فَتَبَيَّنُواْ إِنَّ اللّهَ كَانَ بِمَا تَعْمَلُونَ خَبِيرًا
O you who have believed, when you go forth [to fight] in the cause of Allah , 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 Allah are many acquisitions. You [yourselves] were like that before; then Allah conferred His favor upon you, so investigate. Indeed Allah is ever, with what you do, Acquainted.
Tafsir Ibnu Katsir
يَـأَيُّهَا الَّذِينَ ءَامَنُواْ إِذَا ضَرَبْتُمْ فِى سَبِيلِ اللَّهِ فَتَبَيَّنُواْ وَلاَ تَقُولُواْ لِمَنْ أَلْقَى إِلَيْكُمُ السَّلَـمَ لَسْتَ مُؤْمِناً تَبْتَغُونَ عَرَضَ الْحَيَوةِ الدُّنْيَا فَعِنْدَ اللَّهِ مَغَانِمُ كَثِيرَةٌ كَذلِكَ كُنتُمْ مِّن قَبْلُ فَمَنَّ اللَّهُ عَلَيْكُمْ فَتَبَيَّنُواْ إِنَّ اللَّهَ كَانَ بِمَا تَعْمَلُونَ خَبِيراً
94. O you who believe! When you go (to fight) in the cause of Allah, verify (the truth), and say not to anyone who greets you: â€You are not a believer;'' seeking the perishable goods of the worldly life. There is much more benefit with Allah. Even as he is now, so were you yourselves before, till Allah conferred on you His Favors, therefore, be cautious in discrimination. Allah is Ever Well-Aware of what you do. Imam Ahmad recorded that `Ikrimah said that Ibn `Abbas said, â€A man from Bani Sulaym, who was tending a flock of sheep, passed by some of the Companions of the Prophet and said Salam to them. They said (to each other), `He only said Salam to protect himself from us.' Then they attacked him and killed him. They brought his sheep to the Prophet , and this Ayah was revealed,