I’m guessing this is the verse you are referencing?

Therefore, behold, I will bring evil upon the house of Jeroboam, and will cut off from Jeroboam him that pisseth against the wall, and him that is shut up and left in Israel, and will take away the remnant of the house of Jeroboam, as a man taketh away dung, till it be all gone.

That’s not a commandment from God saying that he’ll cut peoples dicks off if they piss against the wall, that’s part of a curse where God is saying that he’s going to destroy Jeroboam’s family line. Its a curse on a specific guy in history.