Sura Āl-ʿImrān 3:156

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَكُونُوا۟ كَٱلَّذِينَ كَفَرُوا۟ وَقَالُوا۟ لِإِخْوَٰنِهِمْ إِذَا ضَرَبُوا۟ فِى ٱلْأَرْضِ أَوْ كَانُوا۟ غُزًّى لَّوْ كَانُوا۟ عِندَنَا مَا مَاتُوا۟ وَمَا قُتِلُوا۟ لِيَجْعَلَ ٱللَّـهُ ذَٰلِكَ حَسْرَةً فِى قُلُوبِهِمْ وَٱللَّـهُ يُحْىِۦ وَيُمِيتُ وَٱللَّـهُ بِمَا تَعْمَلُونَ بَصِيرٌ

yā-ayyuhā lladhīna āmanū lā takūnū kalladhīna kafarū wa-qālū li-ikhwānihim idhā ḍarabū fī l-arḍi aw kānū ghuzzan law kānū ʿindanā mā mātū wa-mā qutilū li-yajʿala allāhu dhālika ḥasratan fī qulūbihim wallāhu yuḥyi wa-yumītu wallāhu bi-mā taʿmalūna baṣīrun

O ye who believe! Be not like the Unbelievers, who say of their brethren, when they are travelling through the Earth or engaged in fighting: "If they had stayed with us, they would not have died, or been slain." This that Allah may make it a cause of sighs and regrets in their hearts. It is Allah that gives Life and Death, and Allah sees well all that ye do.