Kamasutra 6.6.29

6.6.29

śrotriyasya brahmacāriṇo dīkṣitasya vratino liṅgino vā māṃ dṛṣṭvā jātarāgasya mumūrṣor mitravākyād ānṛśaṃsyāc ca gamanaṃ dharmo 'dharma iti saṃśayaḥ/

(b) When a courtezan is requested by a friend, or is impelled by pity to have intercourse with a learned Brahman, a religious student, a sacrificer, a devotee, or an ascetic who may have all fallen in love with her, and who may be consequently at the point of death, by doing this she might either gain or lose religious merit, and therefore this is called a mixed doubt about the gain and loss of religious merit.