Muhammad essentially is name-dropping Isaac:
Or were you witnesses when death approached Jacob, when he said to his sons, “What will you worship after me?”
They said, “We will worship your God and the God of your fathers, Abraham and Ishmael and Isaac – one God. And we are Muslims [in submission] to Him.”
Koran 2:133
Say, [O believers], “We have believed in Allāh and what has been revealed to us and what has been revealed to Abraham and Ishmael and Isaac and Jacob and the Descendants [al-Asbāṭ] and what was given to Moses and Jesus and what was given to the prophets from their Lord. We make no distinction between any of them, and we are Muslims [in submission] to Him.”
Koran 2:136
Or do you say that Abraham and Ishmael and Isaac and Jacob and the Descendants were Jews or Christians?
Say, “Are you more knowing or is Allāh?” And who is more unjust than one who conceals a testimony he has from Allāh? And Allāh is not unaware of what you do.
Koran 2:140
Say, “We have believed in Allāh and in what was revealed to us and what was revealed to Abraham, Ishmael, Isaac, Jacob, and the Descendants [al-Asbāṭ], and in what was given to Moses and Jesus and to the prophets from their Lord. We make no distinction between any of them, and we are Muslims [submitting] to Him.”
Koran 3:84
Indeed, We have revealed to you, [O Muḥammad], as We revealed to Noah and the prophets after him. And We revealed to Abraham, Ishmael, Isaac, Jacob, the Descendants, Jesus, Job, Jonah, Aaron, and Solomon, and to David We gave the book [of Psalms].
Koran 4:163
And We gave to him [i.e., Abraham] Isaac and Jacob – all [of them] We guided.
And Noah, We guided before; and among his descendants, David and Solomon and Job and Joseph and Moses and Aaron.
Thus do We reward the doers of good.
Koran 6:84
And his wife was standing, and she smiled.
Then We gave her good tidings of Isaac and after Isaac, Jacob.
Koran 11:71
And thus will your Lord choose you and teach you the interpretation of narratives [i.e., events or dreams] and complete His favor upon you and upon the family of Jacob, as He completed it upon your fathers before, Abraham and Isaac. Indeed, your Lord is Knowing and Wise.”
Koran 12:6
And I have followed the religion of my fathers, Abraham, Isaac and Jacob.
And it was not for us to associate anything with Allāh.
That is from the favor of Allāh upon us and upon the people, but most of the people are not grateful.
Koran 12:38
Praise to Allāh, who has granted to me in old age Ishmael and Isaac.
Indeed, my Lord is the Hearer of supplication.
Koran 14:39
So when he had left them and those they worshipped other than Allāh, We gave him Isaac and Jacob, and each [of them] We made a prophet.
Koran 19:49
And We gave him Isaac and Jacob in addition, and all [of them] We made righteous.
Koran 21:72
And We gave to him Isaac and Jacob and placed in his descendants prophethood and scripture.
And We gave him his reward in this world, and indeed, he is in the Hereafter among the righteous.
Koran 29:27
37:112 And We gave him good tidings of Isaac, a prophet from among the righteous.
113 And We blessed him and Isaac.
But among their descendants is the doer of good and the clearly unjust to himself [i.e., sinner].
Koran 37:112-113
And remember Our servants, Abraham, Isaac and Jacob – those of strength and [religious] vision.
Koran 38:45
Muhammad was a false prophet, for a false god, Allah, for a false religion, Islam, without even a false book, the Koran.
Koran Contradiction 