Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 31
Sanskrit:
विलोक्यौशनसीं राजञ्छर्मिष्ठा सुप्रजां क्वचित् ।तमेव वव्रे रहसि सख्या: पतिमृतौ सती ॥ ३१ ॥
ITRANS:
vilokyauśanasīṁ rājañcharmiṣṭhā suprajāṁ kvacittam eva vavre rahasisakhyāḥ patim ṛtau satī
Translation:
O King Parīkṣit, upon seeing Devayānī with a nice son, Śarmiṣṭhā once approached King Yayāti at the appropriate time for conception. In a secluded place, she requested the King, the husband of her friend Devayānī, to enable her to have a son also.