What do you know about the Islamic monotheism? It is the crux of the message of Islam. It simply the belief in the oneness of God. This entails the total submission, and obedience to Allah through His worship; abiding by His do's and religiously discharging them with sincerity of purpose, and staying clear away from His do not's by avoiding falling in them. It is the testimony that there is no other God or Lord or Deity worthy of worship except Allah Alone. And that is the one universal message of all the Prophets and Messengers of Allah beginning from Adam to Muhammad may Allah's peace end benedictions be upon them all!
Obeying Allah entails observing one's prayers at their stipulated times, fasting the month of Ramadan, performing the hajj and any other voluntary acts of worships prescribed by Allah and His Prophet Muhammad peace be upon him. Disobeying Allah entails associating partners with Him and it is the greatest of all sins; Allah says:
"Indeed, Allah does not forgive association with Him, but He forgives what is less than that for whom He wills. And he who associates others with Allah has certainly fabricated a tremendous sin." (Q4:48).
Others include taking another man's life (killing the other), fornication, stealing, slandering, disobedience to parents, being hostile to one's neighbors, among so many others that cannot be contained in this little space. Allah never forgives any one of His servants who dies without repenting from Shirk (associating partners with Him). Allah says He forgives all sins; as seen in Qur’an Chapter 39 verse 53:
"Say, "O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah. Indeed, Allah forgives all sins. Indeed, it is He who is the Forgiving, the Merciful." (Q39:53).
So, one may ask whether is it not contradicting the former verse (Q4:48) that Allah does not forgive one who associates partners with Him? The answer is a capital NO! There is no contradiction. Allah forgives sins when the culprit sincerely repents from such, and similarly, if the person who commits the sin of associating partners with Allah sincerely repents from such then he falls within the fold of those being referred to in the latter mentioned verse (Q39:53). But if he dies without repentance then he falls within the fold of those referred to in the former verse.
The Islamic Monotheism is divided into three parts namely;
i. Islamic Monotheism of God's divinity.
ii. Islamic Monotheism of God's lordship, and
iii. God's names and attributes.
1. Islamic Monotheism of God's divinity (Taoheed al-Uluhiyyah):
This entails the worship of Allah as the One and Only who deserves to be prostrated before in worship, without attributing partners to Him or allocating some part of worship to any other than Him whether in prayers, vows, slaughtering or sacrifices and so on. He Alone should be revered and feared combined with great hopes in His mercies.
2. Islamic Monotheism of God's Lordship (Taoheed al-Rububiyyah):
This on the other hand entails the belief that Allah Alone is the Creator and sustainer of the seven heavens, the earth and the entire universe and what is found therein. It is the belief that He Alone can cause life and death, benefit and harm, give and take and that He Alone controls the totality of the affairs of the universe.
3. The exalted names and attributes of Allah:
This last part of the Islamic monotheism refers to the acceptance by the believer of all that which Allah acknowledged for Himself and that which His Messenger acknowledged regarding His beautiful names and lofty attributes in the Qur’an and sunnah respectively. In addition to negating all that He dissociated Himself away including all forms of debasements, defects and shortcomings which does not befit His personality. He Allah the Exalted says:
"[He is] Creator of the heavens and the earth. He has made for you from yourselves, mates, and among the cattle, mates; He multiplies you thereby. There is nothing like unto Him, and He is the Hearing, the Seeing." (Q42:11).
The aforementioned underlines the basics and fundamentals of the Islamic monotheism. It is all about the universal divine message preached by the Prophets and Messengers of Allah; "there is no other god but Allah"!
The book of Taoheed by Sheikh Salih bin Fawzan Al-Fawzan
The Pillars of Faith by Dr. Abdel Al-Shiddy and Dr. Ahmad Al-Mazyad