These people were probably abducted so as to collect ransoms. Kidnapping infidels and releasing them for ransom or enslaving them, as well as killing them if that option is deemed most advantageous for the Muslims, is fully sanctioned in Islamic law: “As for the captives, the amir [ruler] has the choice of taking the most beneficial action of four possibilities: the first to put them to death by cutting their necks; the second, to enslave them and apply the laws of slavery regarding their sale and manumission; the third, to ransom them in exchange for goods or prisoners; and fourth, to show favor to them and pardon them. Allah, may he be exalted, says, ‘When you encounter those [infidels] who deny [the Truth=Islam] then strike [their] necks’ (Qur’an sura 47, verse 4)” — Abu’l-Hasan al-Mawardi, al-Ahkam as-Sultaniyyah (The Laws of Islamic Governance), trans. by Dr. Asadullah Yate, (London), Ta-Ha Publishers Ltd., 1996, p. 192.
“ISIS abducts 230 civilians in central Syria,” AFP, August 7, 2015:
The Islamic State of Iraq and Syria (ISIS) group has abducted 230 civilians, including at least 60 Christians, in a central Syrian town hours after it captured it, a monitoring group said on Friday.
The Syrian Observatory for Human Rights said the civilians were taken on Thursday in the town of Al-Qaryatain, which ISIS jihadists had captured late Wednesday.
“Daesh kidnapped at least 230 people, including at least 60 Christians, during a sweep through Al-Qaryatain,” Observatory chief Rami Abdel Rahman said, using another name for ISIS.
Many of the Christians had fled from Aleppo province, in Syria’s north, to seek refuge in Al-Qaryatain.
He said those abducted were wanted by ISIS for “collaborating with the regime,” and their names were on a list used by the jihadists as they swept through the town.