"Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, (even if they are) of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued." -- Qur'an 9:29
An update on this story.
"Taliban banish Sikhs from Orakzai for not paying Jizia," from the Daily Times, May 1 (thanks to Sr. Soph):
LAHORE: Taliban in Orakzai Agency have banished 50 Sikh families from the agency for not paying Jizia, a tax levied on non-Muslims living under Islamic law, a private TV channel reported on Thursday. According to the channel, Taliban occupied houses and shops of the Sikhs and auctioned their valuables for Rs 0.8 million in Qasim Khel and Feroz Khel areas. Taliban had demanded Rs 12 million from the Sikh community but they had only paid Rs 6.7 million to the Taliban, the channel said.