Why non-Muslims cannot visit Mecca and Medina

maulana, agla sawal tariq badar sahib ne bheja hai lahore pakistan se, aur unhon ne likha hai ke today lecture added another dimension to understand the issues in life as well as in the world and the creation plan of god. jazak allah. my question is, why non muslims are not allowed to visit mecca and medina, and what is the background of this law? dekhiye, is se pehle main bata chuka hoon ke pehle aisa nahi tha, pehle sabhi log aate the. aur is ka saboot yeh hai ke kaaba mein but pahunch gaya to mushrikeen to pahunchayenge, but muahhid kaise but pahunchayega? kaaba mein jo but pahuncha kai so ki tadad mein to woh mushrikeen to the, woh jo pahunchaya unhon ne muahhid kyon pahunchayega wahan?

to yeh dekha gaya ke log is is azaadi ko besood karte hain. yani yeh nahi kaha ke dekh kar chale jayen, wahan apna but rakh dete hain. woh but jo the wahan kaaba bohat chote chote the, yani bara bara abu lahor ki tarah nahi tha. woh aap jeeb mein rakh ke le aa sakte hain, aisa tha. woh jitne but the kaaba mein, woh abu lahor ki tarah the, nahi the bare bare. to aadmi jaye, jeeb mein rakhi hui hai, wahan rakh ke chala gaya. to is ki precaution ke taur par is tajrube ke baad aisa kiya gaya. main samajhta hoon ke bilkul sahi sahi kiya gaya hai, warna aaj bhi wahi mamla baqi rehta hai.

insaan ajib o ghareeb makhlooq hai, azaadi ko masood karna jo hai, us ki burai ko woh janta hi nahi. okay, so we will end the session now. thank you.