Al 'Imran, 156 Ayah
3:156
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ لَا تَكُونُواْ كَٱلَّذِينَ كَفَرُواْ وَقَالُواْ لِإِخۡوَٰنِهِمۡ إِذَا ضَرَبُواْ فِي ٱلۡأَرۡضِ أَوۡ كَانُواْ غُزّٗى لَّوۡ كَانُواْ عِندَنَا مَا مَاتُواْ وَمَا قُتِلُواْ لِيَجۡعَلَ ٱللَّهُ ذَٰلِكَ حَسۡرَةٗ فِي قُلُوبِهِمۡۗ وَٱللَّهُ يُحۡيِۦ وَيُمِيتُۗ وَٱللَّهُ بِمَا تَعۡمَلُونَ بَصِيرٞ ١٥٦
Yā 'Ayyuhā Al-Ladhīna 'Āmanū Lā Takūnū Kālladhīna Kafarū Wa Qālū Li'khwānihim 'Idhā Đarabū Fī Al-'Arđi 'Aw Kānū Ghuzzáan Law Kānū `Indanā Mā Mātū Wa Mā Qutilū Liyaj`ala Al-Lahu Dhālika Ĥasratan Fī Qulūbihim Wa ۗ Allāhu Yuĥyī Wa Yumītu Wa ۗ Allāhu Bimā Ta`malūna Başīrun
O you who have believed, do not be like those who disbelieved and said about their brothers when they traveled through the land or went out to fight, "If they had been with us, they would not have died or have been killed," so Allah makes that [misconception] a regret within their hearts. And it is Allah who gives life and causes death, and Allah is Seeing of what you do.