Yad Soledes Bo

Question

How did R'Yitzchaq determine that 125 Degrees F. was Yad Soledes Bo?

Answer

Answered by Chaim Yisrael Abadi

I guess "unk", means you don't know what your name is. I'm terribly sorry for you. To answer your question,I don't remember, but I have a hunch he knew what he was doing. CYA