Humane Treatment of Prisoners of War is a Principle of jihad
The Prophet (PBUH) said "Treat war prisoners in a good manner." In this connection, Al-‘Aas ibn Al-Rabie‘, being a non-Muslim at the time, said, "I was kept as a prisoner of war under the supervision of a group of al-Ansar (the Prophet’s Madinah-based supporters, - may Allah reward them) and every time at lunch or dinner, they would give me the bread, even every little chunk, and keep the dates for themselves, although they had little bread. Al-Walid ibn Al-Mughira, another non-Muslim back then, reaffirmed this fact as well. Yazeed also said, “They used to let us ride (camels) while they would march on foot.”