"To disavow Allah's Lordship (Rubb) (Ruboobiyah) or Deity and singular right to be worshipped (Uloohiyah)" In today's lifestyle it looks like that our Rubb has turned in to money, and everyone is learning to earn materialistic lifestyle. For example, as soon as one reaches the age of five, that child starts to learn things such as the English language, or poetry. And the parents look for the best school, and only worry about worldly things for themselves and there children, and there trust is going towards worldly education, to earn money and status, while forgetting about Allah.

Say (O Muhammad SAW): "O Allâh! Possessor of the kingdom, You give the kingdom to whom You will, and You take the kingdom from whom You will, and You endue with honour whom You will, and You humiliate whom You will. In Your Hand^[] is the good. Verily, You are Able to do all things. (3:26)

 Which is taking us far from Allah, being a Muslim, as our Lord or Provider. Today it seems everything in life is the Us dollar, or the British pound, etc. And everyone is rushing only to earn as much as they can, so they have a very strong and best life, for themselves and there children. And this is leading us towards kufr (disbelief).  Because, we are forgetting Allah, and sinking more and more in this world. And because of this action, we almost are denying that we will ever face death. And another problem is if one remembers death, by chance, then goes after the production for his family, and goes towards life insurance.

"Did you think that We had created you in play (without any purpose), and that you would not be brought back to Us?" (23:115)

So Exalted be Allâh, the True King, Lâ ilâha illa Huwa (none has the right to be worshipped but He), the Lord of the Supreme Throne! (23:116)

"or the message of any of the Messengers of Allah (Tawheed (Oneness of Allah, fully dependant on him, without any other partner or helper) [Qur'aan 10:35, 16:36]"

After Tawheed (Oneness of Allah) every Muslim would agree, and would think that they are all on Tawheed. After accepting, then one may ask, when we respect and obey the laws of this world, for example, while today most Muslim nations, are stuck in culture, and in worldly knowledge, which takes us towards disbelief (kufr), if we do not obey the laws of Allah.   

Say: "Is there of your (Allâh's so-called) partners one that guides to the truth?" Say: "It is Allâh Who guides to the truth. Is then He, Who gives guidance to the truth, more worthy to be followed, or he who finds not guidance (himself) unless he is guided? Then, what is the matter with you? How judge you?" (10:35)

And verily, We have sent among every Ummah (community, nation) a Messenger (proclaiming): "Worship Allâh (Alone), and avoid (or keep away from) Tâghût^[] (all false deities, etc. i.e. do not worship Tâghût besides Allâh)." Then of them were some whom Allâh guided and of them were some upon whom the straying was justified. So travel through the land and see what was the end of those who denied (the truth).

"or to claim that any Messenger or Prophet (Rasool or Nabiy) came after the Prophet Muhammad (sallallahu 'alaihi wa sallam)"

Rasullullah clearly mentions in his last sermon:

"O People, NO PROPHET OR APOSTLE WILL COME AFTER ME AND NO NEW FAITH WILL BE BORN. " v

"O People, and understand words which I convey to you." The Prophet (SAW) is emphasizing to us his understanding is very important, of the words what he has conveyed to us. Whatever was conveyed to us was the Quran, and how many of us today, when we read the Quran, we read the it with understanding, after reading the Quran we all are pleased and satisfied that we are reading the laws of Allah without understanding, and we are not focusing what is permissible and what is not. Some of the people the read the Quran for the dead person how can anyone be benefited from there. One should focus why was the complete Quran received in 23 years, when Gabriel (Jibraeel) came, and Allah who is the most powerful, what he wishes is done. Then why did Gabriel (Jibraeel) not put his hand on the heart of the Prophet, and just transfer it in one shot? it was not hard for Allah. Allah knows how careless we are and weak in our faith. The reason why Allah (SWT) sent his message in the time frame of 23 years is because, whenever the Prophet received a revelation in small portions, he applied to show us the benefits in following. 

"I leave behind me two things, the QURAN and my example," 

O you who believe! Obey Allâh, and obey the Messenger (Muhammad SAW) and render not vain your deeds. (47:33) 

What is the Prophet (SAW) is asking us to focus? He said that he is leaving the Qur'an, and his examples, Sunnah.  "O you who believe! Obey Allâh, and obey the Messenger (Muhammad ) and render not vain your deeds. (47:33)"  Who are we obeying today in our lifestyles? Our leaders, culture, customs, and we worry about what people would think if I fully practice Islam, and we will be considered backward by people, and people also complain that Muslims have no leadership, and that Muslim leaders are corrupted. Where are these leaders coming from? They are coming from amongst us, we are the ones who choose them. The way we are like hypocrites, and don't practice, naturally they are then one of us. The way we lie and cheat, and we think we are smart, the same role they play back to us, then why would we complain and cry? The Prophet (SAW) never said he is leaving behind him Abu Bakr, Umar, Uthman, and Ali, or any other companion. Any Muslim is not compared to there status, regardless whoever we are. What every soul has to focus is the Quran, and his examples.

That is the reason today Muslims have so many misguided sects, shia'a, sunni, quadiyani, and so many more. 

" I leave behind me two things, the QURAN and my example," 

"O you who believe! Obey Allâh, and obey the Messenger (Muhammad ) and render not vain your deeds. (47:33)"

"the SUNNAH and if you follow these you will never go astray." The Prophet (SAW) gives us a guarantee, that if we follow these two things, we will never go astray. What a great assurance, did we ever realize that every soul came to this world for a certain duration of time, which the soul has no idea when it will die. And when we transfer to the next world after death, we will not die again. And this is all controlled by Allah.

"Who took their religion as an amusement and play, and the life of the world deceived them." So this Day We shall forget them as they forgot their meeting of this Day, and as they used to reject Our Ayât (proofs, evidences, verses, lessons, signs, revelations, etc.). (7:51) 

It is not worth it to involve in the world, because all our good deeds are useless in front of Allah (SWT) eyes, if we are not practicing Muslim, for example, if anyone does not practice Islam, and lets say he is the best person in dealing, charity, and in all aspects. All of his actions are countless because, he is trying to do best for this world, but did not obey the creator, and denied the creator and provider's laws.