Numbers 5:7

Then they shall confess their sin which they have done ,.... The form of which confession, according to Fagius, was, O Lord, I am guilty of death, I have deserved to be stoned for this sin, or to be strangled for this trespass, or to be burnt for this crime, &c.;

and he shall recompense his trespass with the principal thereof, and add unto it the fifth part thereof ; paying the whole of whatsoever he had in any manner defrauded his neighbour of, to which he was to add a fifth part of that; that is, as Aben Ezra interprets it, it he confesses of himself, but if there are witnesses of it he must add two fifths, and some say a fifth of a fifth:

and give it unto him against whom he hath trespassed ; as a satisfaction for the injury done him.