Shiva Purana
अकरोत्पुत्त्रकामस्तु मनुरिष्टिं प्रजापति॥ अनुत्पन्नेषु पुत्रेषु तत्रेष्ट्यां मुनिपुंगवः॥ ३॥
Desiring to have a son Manu, the creator, performed the sacrifice. The foremost of the ascetics performed the sacrifice when his sons were not born.
english translation
akarotputtrakAmastu manuriSTiM prajApati॥ anutpanneSu putreSu tatreSTyAM munipuMgavaH॥ 3॥
hk transliteration by Sanscript