וְעָבַ֨ר עָלָ֧יו רֽוּחַ־קִנְאָ֛ה וְקִנֵּ֥א אֶת־אִשְׁתּ֖וֹ וְהִ֣וא נִטְמָ֑אָה אוֹ־עָבַ֨ר עָלָ֤יו רֽוּחַ־קִנְאָה֙ וְקִנֵּ֣א אֶת־אִשְׁתּ֔וֹ וְהִ֖יא לֹ֥א נִטְמָֽאָה׃
mais qu’un esprit de jalousie se soit emparé de lui et qu’il soupçonne sa femme, effectivement déshonorée; ou qu’un esprit de jalousie se soit emparé de lui et qu’il soupçonne sa femme, bien qu’elle n’ait point subi le déshonneur,
Mishneh Torah, Woman Suspected of Infidelity
The warning that is mentioned in the Torah - "And he warned his wife" - is that he tells her in the presence of witnesses, "Do not seclude yourself with Mr. so-and-so," even if that man is her father, her brother, a gentile, a slave, or an impotent person who cannot achieve an erection or produce children."