Verily, the religion of Allah is Islam..
(al-Qur'an - Chapter 03, Verse 19)
This day I have perfected for you, your
religion, and have completed my favor on
you, and chosen for you Islam to be The
religion.
(al-Qur'an - Chapter 05, Verse 03)
He it is Who sent His apostle with guidance
and the religion of Truth, that He may
prevail it over all other religions, though
the polytheists may detest it.
(al-Qur'an - Chapter 09, Verse 33)
Therefore, you shall devote yourself
completely to this perfect religion (Islam),
before a day comes which is made
inevitable by God. On that day, they will be
shocked.
(al-Qur'an - Chapter 30, Verse 43)
He it is Who sent His apostle with the
guidance and the true religion that He may
make it prevail over all religions, and God
is enough for a witness.
(al-Qur'an - Chapter 48, Verse 28)
(Allah it is) Who created the seven heavens
layer above layer; you will not see any
defect or incongruity in the creation of
Allah. You may look again! Do you see any
gap? Then repeat your look again and,
your gaze shall return to you amazed,
being wearied.
(al-Qur'an - Chapter 67, Verses 03-04)