Devibhagavatapurana 7.9.50

7.9.50

bhāryāṇāṃ ca śataṃ śuddhaṃ vartate viśadaprabham |
nārātistriṣu lokeṣu ko'pyasti balavānmama ||

Yauvanâs'va said:-- “O Munis! I have got the kingdom wealth, excellent horses, one hundred illustrious chaste wives. I have no enemies in the three worlds; no one is stronger than me. All the Kings and ministers are obedient to my call. But O Ascetics! I have no son; this my sonless state is the only cause of my pain and sorrow. It has marred all my happiness. See! The persons that have no son cannot in any way go to Heavens. Therefore I am always being pained for this. You all are ascetics; you have taken great pains to learn the essence of the Veda S'âstras. So kindly order me what sacrifice is fit for me to have a son. O Ascetics! If you feel any pity for me, kindly perform this good work for me.”