Islam, like other revealed religions, advocates several precepts and beliefs that Allah has required its followers to believe in and propagate without coercion, in keeping with Allah's commandment which meaning of is translated as: �There is no compulsion in religion...� (The Qur'aan, Chapter Al-Baqarah, 2:256).
One of the Islam's fundamentals is the belief in the Oneness of Allah, glory to Him, and directing worship to Him alone. This is the thing for which Allah has created mankind and sent messengers which meaning of is translated as: �Say: He is Allah, the One! Allah, the eternally Besought of all! He begets not, nor was begotten. And there is none comparable unto Him.� (The Qur'aan, Chapter Al-Ikhlas, 112:1-4).
This involves refraining from ascribing partners to Allah, as obvious from Allah's words which meaning of is translated as: �Lo! Allah pardons not that partners should be ascribed unto Him. He pardons all save that to whom He wills...� (The Qur'aan, Chapter An-Nisa'a, 4:116).
Islam ascribes the attributes of perfection to Him and glorifies and exalts Him above His creation as in the following verse which meaning of is translated as: ��There is nothing like Him, and He is the All-Hearer, the All-seer.� (The Qur'aan, Chapter Ash-Shura, 42:11).
It has produced proofs of Allah's oneness in matters of creation, ruling out any possibility of having any partners Allah said which meaning of is translated as: �Had there been therein (in the heavens and the earth) gods besides Allah, then verily both would have been ruined�� (The Qur'aan, Chapter Al-Anbiya'a, 21:22). ��else would each god have assuredly taken away what he had created, and some of them would assuredly have overcome others�� (The Qur'aan, Chapter Al-Muminun, 23:91).
It has also called upon man to reflect on his own self, which is closest to him, so that he should see, through it, the greatness and majesty of the Creator, Allah said which meaning of is translated as: �And (also) in yourselves, can you then not see?� (The Qur'aan, Chapter Az-Zariyat, 51:21).
It is a call to meditation and reasoning which leads common sense and pure nature to believe in the greatness of Allah. The human soul is given, since its creation, to recognize the existence of it's Creator who has also created this Universe, which demonstrates the greatness of its Creator. That is what scientists call 'religious inborn instinct or nature? Allah glory to Him says which meaning of is translated as: �So set your purpose for religion as a man by nature upright - the nature (framed) of Allah, in which He has created man...� (The Qur'aan, Chapter Ar-Rum, 30:30).
This nature is inherent in all people without exception. However, some people deny it out of abstinence and pride, and other acknowledged and believe in it. It's being inherent in everyone is evidenced by the fact that it comes out when it is aroused. When a person falls ill, for instance, or he is struck by an evil or surprised by something unpleasant, you find that he unconsciously cries. O Allah! Or just raises his eyes to heaven recognizing the existence of great mighty power that is able to save him from his dilemma. This is only depicted in Allah's words which meaning of is translated as: �And if misfortune touches a man, he cries unto Us (while reclining) on his side or sitting or standing, but when We have relieved him of the misfortune he goes his way as though he had not cried unto Us because of a misfortune that afflicted him.� (The Qur'aan, Chapter Yunus, 10:12).
Islam replied to those who were tempted into denying the Almighty Creator by a negative question Allah said which meaning of is translated as: �Or were they created out of nothing? Or were they (themselves) the Creators? Or did they create the heavens and the earth? Nay, but they are sure of nothing!� (The Qur'aan, Chapter Fatir, 52:35-36).
If it is impossible for man to come into being by accident, i.e.: without for man to create or bring himself into existence. Common sense and upright nature would admit that every being requires a creator and every effect involves a cause, thus remains the third possibility, i.e. the existence of a Creator. One nomad (bedouin), when asked how he knew about the existence of Allah, said which meaning of is translated as: "Droppings suggest the existence of 'Camel, and footprints are a sign of walking. How about a sky holding mansions of the stars and an earth with tracks and passes; Don't they indicate the existence of the Most Kind, All-Aware God?".