The Great Epic of the Bhārata dynasty 1.3.89

1.3.89

sa vasaṃstatropādhyāyastrībhiḥ sahitābhirāhūyoktaḥ |
upādhyāyinī te ṛtumatī |
upādhyāyaśca proṣitaḥ |
asyā yathāyamṛturvandhyo na bhavati tathā kriyatām |
etadviṣīdatīti || 89 ||

"So Utanka always mindful of the injunction of his preceptor took up his abode in the latter's house. And while Utanka was residing there, the females of his preceptor's house having assembled addressed him and said, 'O Utanka, thy mistress is in that season when connubial connection might be fruitful. The preceptor is absent; then stand thou in his place and do the needful.' And Utanka, thus addressed, said unto those women, 'It is not proper for me to do this at the bidding of women. I have not been enjoined by my preceptor to do aught that is improper.'