Verse
सहयज्ञाः प्रजाः सृष्ट्वा पुरोवाच प्रजापतिः ।अनेन प्रसविष्यध्वम् एष वोऽस्त्विष्टकामधुक् ॥
With sacrifice the Lord of creatures of old created creatures and said: By this shall you bring forth (fruits or offspring), let this be your milker of desires.
Gītā 3·10