Srimad Bhagavatam Canto 09, Chapter 18, Text 31

SB 9.18.31

vilokyausanasim rajañ
 charmistha suprajam kvacit
tam eva vavre rahasi
 sakhyah patim rtau sati
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
O King Pariksit, upon seeing Devayani with a nice son, Sarmistha once approached King Yayati at the appropriate time for conception. In a secluded place, she requested the King, the husband of her friend Devayani, to enable her to have a son also.