All praise be to Allaah Who has perfected the religion for us and has completed His Favor upon us. May peace and blessings of Allaah be upon His Prophet and Messenger Muhammad, the Prophet of repentance and mercy.
Allaah (Exalted be He) says: This day, I have perfected your religion for you, completed My Favour upon you, and have chosen for you Islaam as your religion. Allaah (Exalted be He) also says: Or have they partners (with Allaah — false gods) who have instituted for them a religion which Allaah has not ordained? Moreover, it is reported in the Two Saheeh (authentic) Books of Hadeeth (i.e. Al-Bukhaaree and Muslim) on the authority of `Aa’ishah (may Allaah be pleased with her) that the Prophet (peace be upon him) said… read more here.