Volume 1, Book 2, Number 24:
Narrated 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 worshipped 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.”
Volume 1 – 16 / 1700
SAHIH BUKHARI VOLUME 1 > BOOK 2: BELIEF

Volume 1, Book 2, Number 7:
Narrated Ibn ‘Umar:
Allah’s Apostle said: Islam is based on (the following) five (principles):
1. To testify that none has the right to be worshipped but Allah and Muhammad is Allah’s Apostle.
2. To offer the (compulsory congregational) prayers dutifully and perfectly.
3. To pay Zakat (i.e. obligatory charity) .
4. To perform Hajj. (i.e. Pilgrimage to Mecca)
5. To observe fast during the month of Ramadan.