Kamasutra 5.5.22

5.5.22

antaḥpurikā vā prayojyayā saha svaceṭikā saṃpreṣaṇena prītiṃ kuryāt/ prasṛtaprītiṃ ca sāpadeśaṃ darśane niyojayet/ praviṣṭāṃ pūjitāṃ pītavartīm praṇihitā rājadāsīti samānaṃ pūrveṇa/

(3) Or, one of the King's wives should get acquainted with the woman that the King desires, by sending one of the female attendants to her, who should, on their becoming more intimate, induce her to come and see the royal abode. Afterwards when she has visited the harem, and acquired confidence, a female confidant of the King, sent thither, should act as before described.