Allah the Almighty also revealed: Now ask them (0 Muhammad): 'Are there (only) daughters for your Lord and sons for them?" Or did We create the angels females while they were witnesses?

Verily it is of their falsehood that they (Quraish pagans) say: 'Allah has begotten offspring or children (e. angels are the daughters of Allah)" And, verily they are liars!

Has He (then) chosen daughters rather than sons? What is the matter with you? How do you decide? Will you not then remember? Or is there for you a plain authority? Then bring your Book if you are truthful!

And they have invented a kinship, between Him and the jinns, but the jinn know well that they have indeed to appear (before Him) (i.e. they will be brought for accounts).

Glorified be Allah! (He is free) from what they attribute unto Him! Except the slaves of Allah, whom He chooses (for His Mercy i.e. true believers of Islamic Monotheism who do not attribute false things unto Allah). Surah 37: 149-160

Allah Disclaims Begetting Anyone - Surah 6 (Different Verses)

And Almighty Allah declared: Surely in disbelief are they who say that Allah is the Messiah, son of Mary. Say (0 Muhammad): "Who then has the least power against Allah, if He were to destroy the Messiah, son of Mary his mother, and all those who are on the earth together?" And to Allah belongs the dominion of the heavens and the earth, and all that is between them. He creates what He wills. And Allah is Able to do all things.

And (both) the Jews and the Christians say: "We are the children of Allah and His loved ones." Say: "Why then does He punish you for your sins?" Nay you are but human beings, of those He has created, He forgives whom He wills and He punishes whom He wills. And to Allah belongs the dominion of the heavens and the earth and all that is between them, and to Him is the return (of all).

O people of the Scripture (Jews and Christians)! Now has come to you Our Messenger (Muhammad) making (things) clear unto you, after a break in (the series of) Messengers, lest you say: 'There came unto us no bringer of glad tidings and no warner." But now has come unto you a bringer of glad tidings and a warner. And Allah is Able to do all things. Surah 6: 17-19

Allah Disclaims Christian Beliefs About Jesus 

Allah the Exalted warned: Surely they have disbelieved who say: 'Allah is the Messiah (Jesus), son of Mary." But the Messiah (Jesus) said: "O Children of Israel! Worship Allah, my Lord and your Lord." Verily whosoever sets up partners in worship with Allah, then Allah has forbidden Paradise for him, and the Fire will be his abode. And for the Zalimun (polytheists and wrong-doers) there are no helpers.

Surely disbelievers are those who said: 'Allah is the third of the three (in a Trinity)." But there is no Ilah (god) (none who has the right to be worshipped) but One Ilah (God- Allah). And if they cease not from what they say verily a painful torment will befall the disbelievers among them.

Will they not repent to Allah and ask His Forgiveness? For Allah is Oft-Forgiving Most Merciful.

The Messiah (Jesus), son of Mary, was no more than a Messenger; many were the Messengers that passed a way before him. His mother (Mary) was a Siddiqah i.e. she believed in the Words of Allah and His Books. They both used to eat food (as any other human being, while Allah does not eat). Look how We make the Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) clear to them, yet look how they are deluded a way (from the truth). Surah 6: 72-75

Allah Disclaims Begetting Anyone - Surah 17

And Almighty Allah ordered: And say: 'All the praises and thanks be to Allah, Who has not begotten a son (nor an offspring), and Who has no partner in (His) Dominion, nor He is low to have a Wali (helper, protector or supporter). And magnify Him with all the magnificence, Allah u-A kbar (Allah is the Most Great). " Surah 17: 111

Allah Disclaims Begetting Anyone - Surah 112

The pagans once asked the Prophet Muhammad : 'To whom is your Lord related, His original ancestors and His various branches of descendants?" It is also reported that the Jews said: "We worship Ezra, the Son of Allah," and the Christians said: "Jesus is the Son of Allah," and the Magians said: "We worship the sun and the moon," and the Pagans said: "We worship idols."

In response to all of them Allah revealed some of His attributes: Unity, Uniqueness, and other substantives:

Say (0 Muhammad): "He is Allah, (the) One. Allah AsSamad (The Self-Sufficient Master, Whom all creatures need, He neither eats nor drinks). He begets not, nor was He begotten; and there is none co-equal or comparable unto Him. " Surah 112: 1-4