[If] he paid him the principal and swore to him concerning the fifth, he pays a fifth upon the fifth until the principal dwindles to less than the worth of a perutah. The same applies to a deposit, as it is said (Leviticus 5:21 ff.): ... concerning a deposit, or a loan, or a robbery, or [if] he oppressed another, or found a lost article, and lied about it and swore falsely —- this one pays the principal, a fifth, and a guilt-offering.  “Where is my deposit?” He said to him: “It is lost.” “I adjure you,” and he said: “Amen,” and witnesses testify against him that he ate it —- he pays the principal. [If] he confessed himself, he pays the principal, a fifth, and a guilt-offering.