[bradrn]

Persian mersi is actually a direct borrowing from the French [1]. Not sure about the other one, but I guess it’s just a coincidence, as happens so often in language [2].

[1] https://en.wiktionary.org/wiki/%D9%85%D8%B1%D8%B3%DB%8C#Pers...

[2] https://zompist.com/chance.htm