SB 9.7.8
so ’napatyo visannatma
naradasyopadesatah
varunam saranam yatah
putro me jayatam prabho
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Hariscandra had no son and was therefore extremely morose. Once, therefore, following the advice of Narada, he took shelter of Varuna and said to him, “My lord, I have no son. Would you kindly give me one?”