KFR is a reference to old Rosicrucian and Illuminist symbolism, not actual eye. Pic related is Frater Rosenkreuz.
old Rosicrucian symbolism, notice the One Eye
"If thine Eye be Single, Your Body Shall Be Full of Light"
>Book 41, Number 7008:>Anas b. Malik reported that Allah's Messenger (may peace be upon him) said: There would be written three letters k.f.r., i.e. Kafir, between the eyes of the Dajjal.KFR = Fraternitatis Rosen Kreuz
The same entity/organization that build Georgia Guidestones
https://en.wikipedia.org/wiki/Georgia_Guidestones>Author: R.C. Christian> "R. C. Christian" – resembles Rose Cross Christian, or Christian Rosenkreuz, the founder of the Rosicrucian Order.[2]This KFR is a reference to
https://en.wikipedia.org/wiki/Fama_Fraternitatis>Fama fraternitatis Roseae Crucis oder Die Bruderschaft des Ordens der RosenkreuzerFraternitatis Rosen Kreuz. The Order of the Rosy Cross. It was an organization that was infiltrated by Illuminists like Weishaupt.
Amazing how Muhammed could see to future.