Aushanasasmriti 39

39

vaiśyavṛtyā tu jīveta kṣāttradharmaṃ na cācaret
tasyāṃ tasyaiva caureṇa maṇikāraḥ prajāyate

should live indeed by the livelihood of a Vaiśya, and must not practice Kṣatriya duty. / On her, by secret union of that same [king], a jewel-maker is born;