To Force The Disbelievers To Pay Jizya.
The Muslims are go to on fighting against the disbelievers till they feel themselves subdued and readily pay Jizya.
Allah has said:
Fight against those who
1.Believe not in Allah.
2.Nor in the Last Day.
3.Nor Forbid that which has been forbidden by Allah And
Messenger,
4.And those who acknowledge not the religion of truth (i.e. Islam) among the people of the
Scripture, until they pay the Jizya with willing submission, and feel themselves subdued.
(At-Tawbah:29)