Kamasutra 6.6.28

6.6.28

āgantor aviditaśīlasya vallabhasaṃśrayasya prabhaviṣṇor vā samupasthitasyārādhanam artho 'nartha iti saṃśayaḥ/

(a) The intercourse or connection with a stranger, whose disposition is unknown, and who may have been introduced by a lover, or by one who possessed authority, may be productive either of gain or loss, and therefore this is called a mixed doubt about the gain and loss of wealth.