Bismillah.
You brought three main objections when asked for. When we actually look at the Arabic, historical context, and Islamic law behind them, each one depends on an interpretation, translation, or historical assumption that I don't think holds up.
1. The Three "Errors"
I.The Fractional Inheritance Issue
You argued that because certain combinations of heirs add up to more than 100% on paper, the Quran contains an unresolvable mathematical contradiction.
If a man owes several people $10,000 but only has $8,000, does the judge say, 'We found a contradiction in math'? No. The law has to determine how those claims are distributed.
The problem is that you treat the Quranic fractions like fixed percentages of a fixed pie rather than proportional shares.
In legal systems, if valid claims exceed the available estate, the law does not just "break." The shares can be reduced proportionally. In Sunni jurisprudence, this is handled by ‘Awl. In the example my opponent gave, the denominator is changed to 27, giving the heirs 3/27, 16/27, 4/27, and 4/27.
You can argue about whether ‘Awl is explicitly stated in the Quran or is a later juristic application of the shares. That is a fair discussion.
But the existence of an overage in the original fractions does not by itself prove that Islamic inheritance law is mathematically impossible.
II. The Crucifixion under Pharaoh
You claimed that Pharaoh threatening his magicians with crucifixion in Surah Taha 20:71 is an anachronism because the Romans invented crucifixion centuries later.
But this is treating the English word "crucifixion" as if it automatically means the later Roman cross.
The Quran uses the root ṣ-l-b (صلب), which has a broader meaning involving fastening, impaling, or exposing someone on wood. The verse even specifies "upon the trunks of palm trees."
So to make the historical argument work, you would first have to show that the Arabic word necessarily refers to the exact Roman form of crucifixion.
Otherwise, you are taking a later English image and applying it directly to the Arabic text.
III. The Samaritan (
As-Samiri)
You said that As-Samiri is a contradiction because the Samaritan nation appeared much later.
But that assumes that As-Samiri in the Quran must refer to the later Samaritan population of Samaria.
The Quran presents As-Samiri as the identifier of a specific individual who was present during the time of Musa (AS).
Simply saying that "Samiri" sounds like "Samaritan" does not prove that the Quran is referring to the later Samaritan nation.
You would first have to establish that connection before calling it a historical contradiction.
2.Big Bang
You argue that the Quran is scientifically wrong because Surah 21:30 talks about separation rather than expansion.
But this is combining two different verses.
Surah 21:30 uses fataq, meaning to split, open, or separate something that was previously joined.
Surah 51:47 is a separate verse and talks about expansion using musi'un.
I am not saying that the Quran is a modern physics textbook. It obviously is not.
My point is that one verse describes an initially joined state followed by separation, while another verse separately describes expansion. Those ideas are compatible with the broad picture of modern cosmology.
You do not need the Quran to name things like quantum fields or fundamental forces for the description to be meaningful.
3. The Water Verse
After your earlier Arabic grammar argument was shown to be incorrect, you changed the argument and said that Quran 21:30 creates a timeline problem because it connects the separation of the cosmos with the creation of water.
But the verse contains two statements joined by Waw ("And").
The first is about the separation of the heavens and earth.
The second says:
"And We made from water every living thing."
The Quran does not say that water appeared at the exact moment of the Big Bang.
It is making a separate statement about living things being created from water.
So turning that into "the Quran says the Big Bang instantly produced water" is simply not what the verse says.
There is literally no reason to read that extra meaning into the verse. You are adding a connection that the text itself never makes.
4.
Malik vs.
FiraunYou tried to dismiss the Quran's different use of Malik and Firaun as just a generic word choice.
But that misses the reason this is interesting.
The Bible uses "Pharaoh" in the story of Joseph, while the Quran calls Joseph's ruler Malik and consistently uses Firaun for the ruler of Musa (AS).
The historical development of the title "Pharaoh" shows that it was not originally used as the normal title of the king in the same way during the earlier period.
So the Quran's distinction is at least historically interesting and needs an explanation.
You can argue that Muhammad ﷺ simply happened to use the words this way, or that the distinction came from another source.
But that is a possible explanation. It does not by itself show that the Quran contains an error.
5.Roman Prophecy
You argued that the prophecy failed because the final Persian defeat happened at Nineveh in 627 CE, outside the 3–9 year period.
But that assumes the Quran was predicting the complete end of the Byzantine-Persian war.
It wasn't.
The verse says that the Romans, after their defeat, would overcome within bidʿ sinīn—a period of 3 to 9 years. It does not say that Persia would completely collapse, that the war would end, or that the final peace treaty would happen within that period.
The Byzantine counteroffensive began in the early 620s, meaning the Romans had already begun reversing their earlier defeats within the exact timeframe given by the Quran.
So pointing to Nineveh in 627 and saying "that's when the Romans finally won" does not automatically disprove the prophecy. You are changing "the Romans will overcome" into "the entire war will end." Those are two different claims.
You can argue over which specific Byzantine victory best fits the prophecy, but that is a historical identification question—not evidence that the prophecy failed.
And this is important: if a prediction says a defeated side will overcome within 3–9 years, the fact that the war continued after that does not make the prediction false. The prediction concerns the reversal, not the eventual end of the entire war.
6. The Linguistic Challenge
You argued that the Quranic challenge is subjective because literary quality involves judgment.
But I am not arguing that:
"The Quran sounds nice, therefore Islam is true."
The argument is that the Quran has a distinctive literary form that does not fit neatly into the normal categories of classical Arabic poetry and prose.
Arabic poetry had established meters and conventions, while the Quran had its own style, rhythm, structure, and use of language.
So this is not just about whether someone thinks it is "pretty."
It can be studied through grammar, meter, rhetoric, structure, vocabulary, and other features.
And the historical context matters.
The Quran appeared in a society where Arabic eloquence and poetry were extremely important, and Muhammad's opponents had every reason to try to discredit him.
Yet we do not have a rival work from that period that was broadly recognized within the Arabic tradition as successfully meeting the Quranic challenge.
That does not mathematically prove that no human could ever produce something similar.
But it is still evidence that needs to be explained.
7. Textual Preservation
You pointed to early spelling differences and manuscripts such as the Sana'a palimpsest to challenge Quranic preservation.
But this mixes together different issues.
Early Arabic writing did not represent every vowel in the same way modern Arabic does, and early manuscripts can contain orthographic and scribal differences.
That does not automatically mean that the Quran's actual text was substantially changed.
The main mechanism of Quranic preservation was also not simply physical manuscripts. It was the continuous oral transmission of the text through memorization, together with written copies.
So pointing out that a manuscript has orthographic differences does not by itself refute the claim that the Quran was preserved.
You would need to show that these differences actually amount to a significant corruption of the Quranic text.
My Final Point
I have pointed out many verses from the Quran which, from my view, are miraculous. You responded by arguing that these are normal verses, but in many cases you had to interpret the verses in a way that I do not think the actual wording supports.When I asked you to show me errors, you gave me what you believe are errors. But each one depends on an interpretation, translation, historical assumption, or something being read into the text. That means you have not established a clear, unresolvable error in the Quran.At the end of the debate, you have shown that alternative explanations are possible. You have not shown that the Quran is actually false.