Q 11: What is the only religion man is ordered to embrace?
A ---It is Pure Islamic Monotheism (Worshipping Allah Alone and nothing else); the religion of Ibrahim [Abraham] (Peace be upon him).
Allah, Most High says: {Truly, the religion with Allah is Islam}.
(Al' Imran, 19) He says: {Do they seek other than the religion of Allah (the true Islamic Monotheism worshipping none but Allah Alone), while to Him submitted all creatures in the heavens and the earth, willingly or unwillingly}. (Al' Imran, 83)
He says: {And who turns away from the religion of Ibrahim (Abraham) (i.e. Islamic Monotheism) except him who befools himself?}.
He says: {And whoever seeks a religion other than Islam, it will never be accepted of him, and in the Hereafter he will be one of the losers}. (Al 'Imran, 85)
He says: {Or have they partners with Allah (false gods) who have instituted for them a religion which Allah has not ordained?}.
Reference: 200 FAQ On Muslims Belief - Shiekh Hafiz Ibn Ahmed Al Hakami