The Koran is perfectly clear. Totally.
Alif, Lām, Meem.
Koran 2:1; 3:1; 29:1; 30:1; 31:1; 32:1
Alif, Lām, Meem, Ṣād.
Koran 7:1
Alif, Lām, Rā.
Koran 10:1; 11:1; 12:1; 14:1; 15:1
Alif, Lām, Meem, Rā.
Koran 13:1
Kāf, Hā, Yā, ʿAyn, Ṣād.
Koran 19:1
Ṭā, Hā.
Koran 20:1
Ṭā, Seen, Meem.
Koran 26:1; 28:1
Ṭā, Seen.
Koran 27:1
Yā, Seen.
Koran 36:1
Ṣād.
Koran 38:1
Ḥā, Meem.
Koran 40:1; 41:1; 43:1; 44:1; 45:1; 46:1
42:1 Ḥā, Meem.
2 ʿAyn, Seen, Qāf.
Koran 42:1-2;
Qāf.
Koran 50:1
Nūn.
Koran 68:1
That’s a whale of Nun-sense!

It is He who has sent down to you, [O Muḥammad], the Book; in it are verses [that are] precise – they are the foundation of the Book – and others unspecific. As for those in whose hearts is deviation [from truth], they will follow that of it which is unspecific, seeking discord and seeking an interpretation [suitable to them]. And no one knows its [true] interpretation except Allāh. But those firm in knowledge say, “We believe in it. All [of it] is from our Lord.” And no one will be reminded except those of understanding.
Koran 3:7
Let’s assume that in my heart is “deviation”. How do I follow these Arabic letters? What discord is there, when I don’t understand Arabic letters (or the Arabic language)? What interpretation is there, for these letters?
And no one knows its [true] interpretation except Allāh.
Excerpt, Koran 3:7
And no one knows.
Muhammad was a false prophet, for a false god, Allah, for a false religion, Islam, without even a false book, the Koran.
