“I once asked abu al-Hassan (a.s.), about Romans who invade al-Saqalibah (a people who lived between Bulgaria and Constantinople (Istanbul)), steal their children, slave-girls and slave-boys, then castrate the slave-boys, then send them to Baghdad for the merchants. What do you say about them and we know they are stolen and they were invaded wrongfully without declared war among them. He (the Imam) said, ‘It is not unlawful to buy them because they have only taken them from paganism to al-Islam.’”