Ali 'Imran 3:157

وَلَئِن قُتِلْتُمْ فِى سَبِيلِ ٱللَّهِ أَوْ مُتُّمْ لَمَغْفِرَةٌ مِّنَ ٱللَّهِ وَرَحْمَةٌ خَيْرٌ مِّمَّا يَجْمَعُونَ

Wala-in qutil'tum fī sabīli l-lahi aw muttum lamaghfiratun mina l-lahi waraḥmatun khayrun mimmā yajmaʿūna

And if you are killed in the cause of Allāh or die - then forgiveness from Allāh and mercy are better than whatever they accumulate [in this world].