Not equal are those believers remaining [at home] - other than the disabled - and the mujāhideen, [who strive and fight] in the cause of Allāh with their wealth and their lives. Allāh has preferred the mujāhideen through their wealth and their lives over those who remain [behind], by degrees. And to all [i.e., both] Allāh has promised the best [reward]. But Allāh has preferred the mujāhideen over those who remain [behind] with a great reward -

— Saheeh International