TT #256 · Parashas Shoftim · Sixth Aliyah · Passuk 19:18
And the judges shall inquire well, and behold, the witness is a false witness; he has testified falsely against his brother.
Torah Temimah points to Sifrei Devarim 190.
TT lemma: שֶׁקֶר עָנָה בְאָחִיו.
English: ‘He has testified falsely against his brother’ – and not against himself.
Derash on the victim of the falsehood (Sifrei) — the testimony harms a fellow Jew.
The crime of the malicious witness is that he has testified falsely against his brother, seeking to harm him through the court.