וְנֶ֣פֶשׁ כִּֽי־תֶחֱטָ֗א וְשָֽׁמְעָה֙ ק֣וֹל אָלָ֔ה וְה֣וּא עֵ֔ד א֥וֹ רָאָ֖ה א֣וֹ יָדָ֑ע אִם־ל֥וֹא יַגִּ֖יד וְנָשָׂ֥א עֲוֺנֽוֹ׃
And if any one sin, in that he heareth the voice of adjuration, he being a witness, whether he hath seen or known, if he do not utter it, then he shall bear his iniquity;
Targum Jonathan on Leviticus
When a man shall have sinned, and heard the voice of the oath of execration, or have been himself a witness, or shall have seen that cue of the world hath transgressed against the words of an oath, or shall have known that his companion hath sworn or imprecated vainly, if he show it not, he shall bear his sin.