Surah Ali'Imran, Verse 168

ٱلَّذِينَ قَالُواْ لِإِخۡوَٰنِهِمۡ وَقَعَدُواْ لَوۡ أَطَاعُونَا مَا قُتِلُواْۗ قُلۡ فَٱدۡرَءُواْ عَنۡ أَنفُسِكُمُ ٱلۡمَوۡتَ إِن كُنتُمۡ صَٰدِقِينَ١٦٨

alladhīna qālū li-ikh'wānihim waqaʿadū law aṭāʿūnā mā qutilū qul fa-id'raū ʿan anfusikumu l-mawta in kuntum ṣādiqīna

Those who said about their brothers while sitting [at home], "If they had obeyed us, they would not have been killed." Say, "Then prevent death from yourselves, if you should be truthful."