A Muslim has five main obligatory duties to perform, namely; bearing witness to the Oneness of G’d and belief in Muhammad (peace and blessings on him) as His Messenger, observing the prescribed five daily prayers, payment of zakat(alms-giving), fasting during the month of Ramadan, and performing the Hajj(pilgrimage to Mecca).
Muslims also believe in G’d’s angels, previously revealed Books of G’d, all of His prophets (from Adam to Muhammed [peace & blessing be on them all]), the Day of Judgment and indeed the decree of G’d.
“The Muslim is obligated to recognize his responsibility to all the communities of man; he cannot forget that in promoting his own cause. He must have a healthy regard for the destiny of other people. He must also contribute to the worthwhile and noble endeavors of others. He is to support, compliment, congratulate and feel happy about the progress of others who are not of his religion. This kind of attitude is healthy for anybody, and it is an obligation for the Muslim. “
-Imam W. Deen Mohammed, An African-American Genesis, 1986