1. Tawhid Ar-Rububiah
This is a belief that Allah has created mankind and bestowed upon them their means of living, and can give life to them and can take it from them. Or we can say that it is the Monotheism of Allah in His deeds, like the belief that he is the Creator and the Provider.
In fact, the earlier disbelievers have admitted this kind of belief, and so have Jewish, Nazareth, Sabians and Magans people. No body denied this Tawhid except Dahriah in the past time.
The proof of Tawhid Ar-Rububiah:
One thing can be said to these ignorant people who deny the existence of the Bountiful Lord: no rational person can accept an impact without an effect, or an action without a doer or a creation without a Creator.
Moreover, it is quite obvious that if you see a needle, you would certainly be assured that it has a Maker. So what can be said about this marvelous bright universe, which dazzle sights? Has it been created without a Creator and found without a finder? And much more, have it been organized without an organizer, and all what exits in this universe, stars, clouds, lightening, thunders, deserts, seas, day and night, dark and light, trees and roses, jinn and mankind, Angels and animals, and all sorts of uncountable creatures? Have all of these been found without a Finder Who could create them from nothing.
No one, who has a tip of rationalism, can say that.
In short, proofs of Ar-Rububiah (Lordship) of Allah cannot be counted, and He Spoke the Truth when He said, - meaning- { Were they created of nothing, or were they themselves the creators?}, and when He said, “-meaning- { Allah is the Creator of all things, and He is the Guardian and Disposer of all affairs}.
One of the rational evidence we were talking about is a debate between Abu Hanifah (may Allah be Merciful with him) and a group of scholastic people who were arguing with him Tawhid Ar-Rububiah (Islamic Monotheism for Allah’s Lordship). Abu Hanifah asked them, “ before we talk about this issue would you tell me about that ship in Dijlah River, which has loaded itself with foods and goods, and then returned by itself, after all it anchored and emptied its goods without having someone to direct?”, “ this is quite impossible , and could not happen by any way!” they said, then Abu Hanifah told them, “what would you then say about all this upper and lower universe??” – and this story was narrated about someone other than Abu Hanifah.
The Proof that the polytheists admitted Tawhid Ar-Rububuiah (Islamic Monotheism for Allah’s Lordship)
Allah (swt) said,-meaning- “If you ask them, who it is that created the heavens and the earth, they will certainly say, Allah.” Say (O Muhammad (saw): “All Praise be to Allah.” But most of them understand not.”
And He said, -meaning- { (O Muhammad (saw): “ Who is it that sustains you (in life) from the sky and from the earth? Or who is it that has power over hearing and sight? And who is it that brings out the living from the dead and the dead from the living? And who is it that rules and regulates all affairs?” They will soon say, “ Allah. “ Say (O Muhammad (saw), “Will you not then show piety (to Him)?” Such is Allah, your real Cherisher and Sustainer: apart from Truth, what (remains) but error? How then are you turned away?}
And He said,-meaning- {If you were to question them, “who created the heavens and the earth? They would be sure to reply, “ They were created by (Him), the Exalted in Power, full of Knowledge.}
Remark: Tawhid Ar-Rububiah (Islamic Monotheism for Allah’s Lordship) is not enough to embrace Islam unless Tawhid Al-Uluhiah (Islamic Monotheism for Allah’s Worship) is adopted too.