وَلَا تَقُولُواْ لِمَن يُقۡتَلُ فِي سَبِيلِ ٱللَّهِ أَمۡوَٰتُۢۚ بَلۡ أَحۡيَآءٞ وَلَٰكِن لَّا تَشۡعُرُونَ ١٥٤
And do not say about those who are killed in the way of Allāh, "They are dead." Rather, they are alive, but you perceive [it] not.
Translation: Saheeh International (English)
Each word's meaning and sound
Do not say, O believers, about those who are killed whilst striving in Allah’s path that they are dead just as others are; rather, they are alive with their Lord, but you do not realise that they are living, because the way in which they are alive can only be understood through revelation from Allah.
Al-Mukhtasar in interpreting the Noble Quran