Sahih Bukhari Volume 001, Book 002,
Hadith Number 024.
Sahih Bukhari Book 02. Belief
Narated By Ibn 'Umar : Allah's
Apostle said: "I have been ordered
(by Allah) to fight against the people
until they testify that none has the
right to be worshiped but Allah and
that Muhammad is Allah's Apostle,
and offer the prayers perfectly and
give the obligatory charity, so if they
perform a that, then they save their
lives an property from me except for
Islamic laws and then their reckoning
(accounts) will be done by Allah."