# the price of his guilt
Here the person's "sin" is referred to as his "guilt." Alternate translation: "what is considered a suitable amount of money for the wrong that he has done" (See: [[rc://en/ta/man/jit/figs-metonymy]])
# add to the price one-fifth more
This means the person must pay an extra one-fifth of the price that he owes.
# one-fifth
This is one part out of five equal parts. (See: [[rc://en/ta/man/jit/translate-fraction]])