to state just a thing is blasphamy and according to shria law you can be punished by death.
Qur'an:
[112:1] Proclaim, "He is the One and only GOD. "The Absolute GOD. "Never did He beget. Nor was He begotten.
[19:88-95] They said, "The Most Gracious has begotten a son"! You have uttered a gross blasphemy. The heavens are about to shatter, the earth is about to tear asunder, and the mountains are about to crumble. Because they claim that the Most Gracious has begotten a son. It is not befitting the Most Gracious that He should beget a son.Every single one in the heavens and the earth is a servant of the Most Gracious. He has encompassed them, and has counted them one by one.All of them will come before Him on the Day of Resurrection as individuals.
This denighs the resurection or death of Jesus
That they said (in boast), "We killed Christ Jesus the son of Mary, the Apostle of God";- but they killed him not, nor crucified him, but so it was made to appear to them, and those who differ therein are full of doubts, with no (certain) knowledge, but only conjecture to follow, for of a surety they killed him not. (Quran 4:157)
Finally, Jesus is presented as a forerunner of Muhammad, just as John the Baptist was the forerunner of Jesus: “And remember, Jesus, the son of Mary, said: "O Children of Israel! I am the apostle of God (sent) to you, confirming the Law (which came) before me, and giving Glad Tidings of an Apostle to come after me, whose name shall be Ahmad" (Quran 61:6).4
If Islam is correct in saying that Jesus is purely human, then he respected indeed. But from a Biblical perspective, which presents Jesus as God incarnate, who sacrificed Himself for our sins, the Quranic teaching is not only disrespectful but utterly blasphemous.