Is it considered theft for the mujahidin to take land, money, and weapons during combat, and how should the seized money and weapons be dealt with, and what is meant by "al-khums"?

Jihad was legislated for the purpose of spreading the religion and repelling aggression. War spoils are permissible for Muslims to take; they are what is taken from disbelievers through jihad, and it is not considered theft because the wealth of disbelieving combatants is not inviolable. The spoils are divided into five portions: four-fifths for the fighters (a foot soldier receives one share, and a cavalryman three shares), and the remaining one-fifth is allocated for Allah and His Messenger (for public welfare), for the Prophet’s relatives, the orphans, the needy, and the wayfarer.