Abu Dawud
Jihad
Book Number: 008 / Hadith Number: 2608
Narated By Anas ibn Malik : The Prophet (pbuh) said: Go in Allah's name, trusting in Allah, and adhering to the religion of Allah's Apostle. Do not kill a decrepit old man, o a young infant, or a child, or a woman; do not be dishonest about booty, but collect your spoils, do right and act well, for Allah loves those who do well.