बाह्याभिश्च दासीभिः प्रतिषेधयेत् ॥ कZ_०१.२०.१८ ॥
bāhyābhiś ca dāsībhiḥ pratiṣedhayet
And he should enforce the prohibition (of such access/contacts) through outside female servants as well.
It institutionalizes denial of access as a routine administrative function, reducing ad hoc exceptions and limiting direct pressure on principals (queen/king).