The Shaykh said in Sharh Usoolul-Eemanan (pp.4-7):
 The deen (religion) of Islaam: It is the way of life
that Allaah sent the Prophet Muhammad sallallaahu 'alayhi wa sallam with. By it,
Allaah terminated the validity of all other religions, perfected this religion
for His worshippers, completed His favour upon them and has chosen only this
religion for them - no other religion will be accepted by Him from anyone.
Allaah - the Most High - said:"Muhammad is not the father of any man
amongst you. Rather he is the Messenger of Allaah and the khaatim (last and
final) of the Prophets." [Soorah al-Ahzaab 33:40].
"This day have I perfected your religion for you,
completed My favour upon you, and have chosen for you Islaam as your
religion." [Soorah al-Maatidah 5:3].
"Indeed the religion with Allaah is Islaam."
[Soorah Aal-'lmraan 3:19].
"Whosoever seeks a religion other than Islaam, never
will it be accepted from him, and in the Hereafter he will be one of the
losers." [Soorah Aal-'Imraan 3:85].
And Allaah - the Most High - obligated all of mankind to
take Islaam as their religion. So Allaah said, whilst addressing His Messenger
sallallanhu `alayhi wa sallam:"Say: O mankind! Indeed I have been sent to
you all as the Messenger of Allaah; to Whom belongs the dominion of the heavens
and the earth. None has the right to be worshipped except Him; it is He who
gives life and causes death. So believe in Allaah and His Messenger - the
Prophet who can neither read nor write - who believes in Allaah and His Words.
So follow the Messenger of Allaah so that you may be rightly-guided."
[Soorah al-A'raaf 7:158].
And in Saheeh Muslim ( 1/93 ), from Abu Hurayrah
radiallanhu `anhu that Allaah's Messenger sallallaahu 'alayhi wa sallam said:
"By Him in whose Hand is the life of Muhammad! There is no one from this
nation, be he a Jew or a Christian, who hears of me and then dies without
believing in the Message that I was sent with, except that he will be one of the
Companions of the Hellfire. And eemnan (faith) in the Prophet implies: affirming
that which he was sent with, along with acceptance of it and submission to it.
Without these two matters, mere affirmation is not sufficient. This is why even
though Abu Taalib (the Prophet's uncle) affirmed what was sent to the Prophet
Muhammad sallallaahu 'alayhi wa sallam and that Islaam was the best of
religions, yet he did not accept his message nor submit to it; and thus he did
not have eemaan, in the Prophet sallallaahu 'alayhi wa sallam.
 The religion of Islaam contains all that was
beneficial from the previous religions. It is suitable for implementation in any
age, any where and by any nation. Allaah - the Most High - said, whilst
addressing His Messenger sallallaahu 'alayhi wa sallam:"And We have sent
down to you the Book in truth, confirming the Scripture that came before it>
testifying to the truth contained therein whilst exposing the falsehood that has
been added therein." [Soorah al-Maa'idah 5:48].That Islaam is suitable for
implementation in any age, anywhere and by any nation does not mean that it
becomes submissive to nations - being altered and changed by them - as some
people falsely think. But rather it means that whenever it is truly adhered to
then it brings benefit and goodness to that nation, as well as reforming and
correcting it - in whatever age or place.
 The religion of Islaam is the religion of truth. It
is the way of life that Allaah - the Most High - guaranteed His help and victory
for those who truly adhere to it, and that He would make it dominant over all
Allaah - the Most High - said:"It is He who has sent
His Messenger with the guidance and the religion of truth, that it may prevail
over all other religions, even if the pagans detest it." [Soorah at-Tawbah
And Allaah - the Most High - said:"Allaah has
promised to those amongst you who truly have eemaan (true faith and belief) and
act in obedience to Allaah and His Messenger, that He will grant them rulership
upon the earth, just as He granted it to those before them, and that He will
establish their Religion for them and grant them the authority to practice their
Religion which He chose and ordered them with. And He will certainly change
their situation to one of security, after their fear. Providing that they
worship and obey Me, not associating anything else in worship with Me. Then,
whoever rejects this favour by disobedience to their Lord - then they are the
rebellious transgressors." [Soorah an-Noor 24:55]
 The religion of Islaam is a complete religion
comprising both `aqeedah (beliefs) and sharee`ah (laws).
It commands them with tawheed (to single out Allaah alone
for worship) and prohibits them from shirk (associating partners with Allah in
that which is particular to Him).
- It commands them with being truthful and prohibits them
- It commands them with `adl (justice) and prohibits them
from injustice and oppression.
- It commands them with fulfilling trusts and prohibits
them from acting treacherously.
- It commands them with keeping promises and prohibits
them from breaking them.
- It commands them with kindness and good treatment of
parents and prohibits them from disobedience to them in that which is not
- It commands them with joining the ties of relations and
prohibits them from severing them.
- It commands them with good treatment of neighbours and
prohibits the causing of harm to them.
In short, Islaam orders all that is good, from manners
and morals, and prohibits all that is evil from it.
Likewise, it orders all actions which are righteous and
good and prohibits all actions that are evil and harmful.
Allaah - the Most High - said:"Indeed Allaah enjoins
upon you justice, kindness and the giving of good to relatives and near ones. And He
prohibits you from all shameful and evil deeds, oppression and transgression. Thus He
admonishes you, that you may take heed and be reminded." [Soorah an-Nahl, 16:90]