Musannaf Ibn Abi Shaybah 35335 — Those whom it is forbidden to kill

Ash'ath (may Allah have mercy on him) reports that al-Hasan al-Basri (may Allah have mercy on him) considered it disliked that a very old man, children or a woman be killed in the abode of war (Dar al-Harb). He also considered it disliked that a man should carry any of them along with him and then, when carrying them became burdensome for him, throw them down on the road.