Explaining the importance of tawhid (the oneness of Allah) in the Muslim's creed, along with explaining the fruit of the one who unites Allah (Blessed and Exalted is He).

The Shaykh : ... Our brothers present, except to remind them of what can be derived from some of the texts of the Shari'ah, and especially from the saying of Allah the Exalted: . We, who adhere to acting upon the Book and the Sunnah and following the methodology of the righteous Salaf, have become known in the Islamic world, and that is by the grace of Allah upon us and upon the people. However, most people do not act upon this. We have become known for our concern with the creed in general, in accordance with the Book and the Sunnah and what the righteous Salaf were upon, and with tawhid (the oneness of Allah) in particular.
This is, without a doubt, a very great matter, and Allah (Blessed and Exalted is He) has bestowed a favor upon us, for it is well known that tawhid (the oneness of Allah) is the foundation and origin of faith, and that any matter of faith or righteous deed benefits its owner nothing if he neglects tawhid (the oneness of Allah). This is the meaning of his saying (peace and blessings be upon him) in the famous authentic hadith: , narrated by al-Bukhari and others. "Allah has forbidden his body to the Fire" has two interpretations and two explanations:
The first is: Allah has forbidden his body to the Fire absolutely, such that the Fire does not touch him with any harm, and such that he falls under the exception mentioned in the saying of Allah (Blessed and Exalted is He) in the well-known verse which says: - here is the exception - . So this is an oath from Allah (Blessed and Exalted is He) that there is no one among the accountable humans and jinn who will not enter the Fire, and "entering" here, according to the most correct opinion of the exegetes, means entering, meaning that every accountable soul must enter the Fire in a real sense. But here the righteous differ from the wicked. This entering may be accompanied by salvation, as He said: , or it may be accompanied by punishment, as He completed the verse by saying: . So "Allah has forbidden his body to the Fire" has two interpretations and two explanations:
The first is: that he does not enter the Fire in a way of punishment absolutely, and this is, without a doubt, for the one who fulfills the right of this medical word, "La ilaha illa Allah" (There is no god but Allah).
The second is: that he does not enter it in a way that he remains in it eternally, because his testimony of "La ilaha illa Allah" (There is no god but Allah) stands between him and this eternal abode in the Fire. And by this, he (peace and blessings be upon him) indicated in the authentic hadith narrated by al-Bazzar and others from the Prophet (peace and blessings be upon him) that he said: . "It benefited him one day of his life" means that if he enters the Fire and is punished therein for as long as Allah wills of punishment for what his hands have earned, he must surely come out of the Fire one day. This is the meaning of his saying (peace be upon him): . So this testimony of tawhid (the oneness of Allah), when Allah (Mighty and Majestic) bestows a favor upon some of His servants by believing in it with understanding and conviction, is the greatest blessing, because its result is that either he does not enter the Fire absolutely, and this is if he fulfills its right as we mentioned earlier, or if he does enter it, he does not abide in it with those who abide eternally. This is a very great blessing.