There’s some mentions about a calf in the Koran, which seem a bit off, as Muhammad is only a messenger from his own people, the Syrians, not to the Jews or Christians.
Gold Calf
20:87 They said, “We did not break our promise to you by our will, but we were made to carry burdens from the ornaments of the people [of Pharaoh], so we threw them [into the fire], and thus did the Samiri throw.”
88 And he extracted for them [the statue of] a calf which had a lowing sound, and they said, “This is your god and the god of Moses, but he forgot.”
89 Did they not see that it could not return to them any speech [i.e., response] and that it did not possess for them any harm or benefit?
90 And Aaron had already told them before [the return of Moses], “O my people, you are only being tested by it, and indeed, your Lord is the Most Merciful, so follow me and obey my order.”
91 They said, “We will never cease being devoted to it [i.e., the calf] until Moses returns to us.”
Koran 20:87-91
Version 2
2:51 And [recall] when We made an appointment with Moses for forty nights.
Then you took [for worship] the calf after him [i.e., his departure], while you were wrongdoers.
52 Then We forgave you after that so perhaps you would be grateful.
Koran 2:51-52
Version 3
And [recall] when Moses said to his people, “O my people, indeed you have wronged yourselves by your taking of the calf [for worship]. So repent to your Creator and kill yourselves [i.e., the guilty among you]. That is best for [all of] you in the sight of your Creator.”
Then He accepted your repentance; indeed, He is the Accepting of Repentance, the Merciful.
Koran 2:54
Version 4
2:92 And Moses had certainly brought you clear proofs.
Then you took the calf [in worship] after that, while you were wrongdoers.
93 And [recall] when We took your covenant and raised over you the mount, [saying], “Take what We have given you with determination and listen.”
They said [instead], “We hear and disobey.”
And their hearts absorbed [the worship of] the calf because of their disbelief.
Say, “How wretched is that which your faith enjoins upon you, if you should be believers.”
Koran 2:92-93
Version 5
The People of the Scripture ask you to bring down to them a book from the heaven.
But they had asked of Moses [even] greater than that and said, “Show us Allāh outright,” so the thunderbolt struck them for their wrongdoing.
Then they took the calf [for worship] after clear evidences had come to them, and We pardoned that.
And We gave Moses a clear authority.
Koran 4:153
Version 6
And the people of Moses made, after [his departure], from their ornaments a calf – an image having a lowing sound.
Did they not see that it could neither speak to them nor guide them to a way?
They took it [for worship], and they were wrongdoers.
Koran 7:148
Version 7
Indeed, those who took the calf [for worship] will obtain anger from their Lord and humiliation in the life of this world, and thus do We recompense the inventors [of falsehood].
Koran 7:152
Lo! Those who chose the calf (for worship), terror from their Lord and humiliation will come upon them in the life of the world. Thus do We requite those who invent a lie.
Pickthall, Koran 7:152
Roast Calf
11:69 And certainly did Our messengers [i.e., angels] come to Abraham with good tidings; they said, “Peace.”
He said, “Peace,” and did not delay in bringing [them] a roasted calf.
70 But when he saw their hands not reaching for it, he distrusted them and felt from them apprehension.
They said, “Fear not. We have been sent to the people of Lot.”
Koran 11:69-70
Version 2
51:24 Has there reached you the story of the honored guests of Abraham? – 25 When they entered upon him and said, “[We greet you with] peace.”
He answered, “[And upon you] peace; [you are] a people unknown.”
26 Then he went to his family and came with a fat [roasted] calf.
27 And placed it near them; he said, “Will you not eat?”
28 And he felt from them apprehension.
They said, “Fear not,” and gave him good tidings of a learned boy.
Koran 51:24
Sans Calf
They said, “Call upon your Lord to make clear to us what it is.”
[Moses] said, “[Allāh] says, ‘It is a cow which is neither old nor virgin, but median between that,’ so do what you are commanded.”
Koran 2:68
They said: Pray for us unto thy Lord that He make clear to us what (cow) she is.
(Moses) answered: Lo!
He saith, Verily she is a cow neither with calf nor immature; (she is) between the two conditions; so do that which ye are commanded.
Pickthall, Koran 2:68
Conclusion
As you can see, and imagine hearing, there’s audio sound effects from Muhammad to his scribes. His young scribes most likely didn’t know what a cow or calf was, as Muhammad had sacrificed all of them to Allah to weaken and starve his tribe in Mecca, so he could easily invade.
Muhammad was a false prophet, for a false god, Allah, for a false religion, Islam, without even a false book, the Koran.
Koran Contradiction 