Chapter 3 - Verse 10

सहयज्ञाः प्रजाः सृष्ट्वा पुरोवाच प्रजापतिः ।
अनेन प्रसविष्यध्वमेष वोऽस्त्विष्टकामधुक् ॥ १० ॥

sahayajñāḥ prajāḥ sṛṣṭvā purovāca prajāpatiḥ .
anena prasaviṣyadhvameṣa vo’stviṣṭakāmadhuk .. 10 ..


Having first created mankind together with sacrifices, the Prajāpati said, “By this shall ye propagate; let this be to you the cow of plenty.
Read the commentary

Mankind: composed of the three castes. First: at the beginning of creation. The cow of plenty: the cow which yields all desires.

How can this be achieved by sacrifice?