Allah Disclaims Begetting Anyone - Surah 19
Almighty Allah refuted the claims of the Jews and the Christians in many verses of the Glorious Qur'an.

And they say: 'The Most Beneficent (Allah) has begotten a son (or offspring or children) as the Jews say: Ezra is the son of Allah, and the Christians say that He has begotten a son (Christ), and the pagan Arabs say that He has begotten daughters (angels, etc.)."

Indeed you have brought forth (said) a terrible evil thing Where by the heavens are almost torn, and the earth is split asunder, and the mountains fall in ruins, that they ascribe a son (or offspring or children) to the Most Beneficent (Allah).

But it is not suitable for (the Majesty of) the Most Beneficent (Allah) that He should beget a son (or offspring or children). There is none in the heavens and the earth but comes unto the Most Beneficent (Allah) as a slave. Verily He knows each one of them, and has counted them a full counting And everyone of them will come to Him alone on the Day of Resurrection (without any helper, or protector or defender). Surah 19: 88-95

Allah Disclaims Begetting Anyone - Surah 6
Allah the Exalted also declared: Yet, they join the jinns as partners in worship with Allah, though He has created them (the jinns), and they attribute falsely without knowledge sons and daughters to Him. Be He Glorified! And Exalted above (all) that they attribute to Him.

He is the Originator of the heavens and the earth. How can He have children when He has no wife? He created all things and He is the All-Knower of everything.

Such is Allah your Lord! La ilaha illa Huwa (none has the right to be worshipped but He), the Creator of all things. So worship Him (Alone), and He is the Wakil (Trustee, Disposer of affairs, Guardian etc.) over all things.

No vision can grasp Him, but His Grasp is over all vision. He is the Most Subtle and Courteous, Well-Acquainted with all things. Surah 6: 100-103