Devarim 19:15

15 Ed echad shall not rise up against an ish for any avon (iniquity), or for any chattat (sin), in any sin that he sinneth: at the mouth of shney edim, or at the mouth of shloshah edim, shall the matter be established.

Devarim 19:15 Meaning and Commentary

Deuteronomy 19:15

One witness shall not rise up against a man for any iniquity,
or for any sin, in any sin that he sinneth
Whether capital sins, or pecuniary debts; or whatsoever sins a man may be guilty of whether sins against the first or second table of the law, whether greater or lesser sins, whether in moral or civil things; the Jews except only in the case of a woman suspected of adultery and of beheading the heifer:

at the mouth of two witnesses, or at the mouth of three witnesses,
shall the matter be established;
either for acquittance or condemnation; and the witnesses may not, as Jarchi says, write their testimony in a letter, and send it to the sanhedrim, nor may an interpreter stand between the witnesses and the judges; (See Gill on Deuteronomy 17:6).

Devarim 19:15 In-Context

13 Thine eye shall not pity him, but thou shalt put away the guilt of dahm naki from Yisroel, that it may go well with thee.

14 Thou shalt not remove thy neighbor’s landmark, which they of old time have set in thine nachalah, which thou shalt inherit in the eretz that Hashem Eloheicha giveth thee to possess it.

15 Ed echad shall not rise up against an ish for any avon (iniquity), or for any chattat (sin), in any sin that he sinneth: at the mouth of shney edim, or at the mouth of shloshah edim, shall the matter be established.

16 If an ed chamas (malicious, false witness) rise up against any ish to testify against him that which is wrong;

17 Then both the men, between whom the controversy is, shall stand before Hashem, before the kohanim and the shofetim, which shall be in those days;