Ali 'Imran 3:157

Wala-in qutiltum fee sabeeli Allahiaw muttum lamaghfiratun mina Allahi warahmatunkhayrun mimma yajmaAAoon

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].

If you are killed in the way of Allah or die, the forgiveness from Allah and the mercy is far better than what they accumulate