Sacrifice for religious principles

وَٱلَّذِينَ هَاجَرُوا۟ فِى سَبِيلِ ٱللَّهِ ثُمَّ قُتِلُوٓا۟ أَوْ مَاتُوا۟ لَيَرْزُقَنَّهُمُ ٱللَّهُ رِزْقًا حَسَنًا ۚ وَإِنَّ ٱللَّهَ لَهُوَ خَيْرُ ٱلرَّٰزِقِينَ

And those who emigrated for the cause of Allāh and then were killed or died - Allāh will surely provide for them a good provision. And indeed, it is Allāh who is the best of providers.