3.10 Beings and sacrifice together Krishna speaks

सहयज्ञाः प्रजाः सृष्ट्वा पुरोवाच प्रजापतिः
अनेन प्रसविष्यध्वमेष वोऽस्त्विष्टकामधुक्

saha-yajñāḥ prajāḥ sṛiṣhṭvā purovācha prajāpatiḥ
anena prasaviṣhyadhvam eṣha vo ’stviṣhṭa-kāma-dhuk

In the beginning the Lord of creatures brought forth beings together with sacrifice, and said: by this, flourish; let this be what grants your wishes.

Explanation

Beings and sacrifice were brought forth together.

The Lord of creatures made them in one act and said: by this, flourish.

So the exchange is not something added to creation afterwards. Giving is described as coeval with existing — which is why 3.12 can call taking without giving theft rather than merely ingratitude.

Word by word

saha: along with
yajñāḥ: sacrifices
prajāḥ: humankind
sṛiṣhṭvā: created
purā: in beginning
uvācha: said
prajā-patiḥ: Brahma
anena: by this
prasaviṣhyadhvam: increase prosperity
eṣhaḥ: these
vaḥ: your
astu: shall be
iṣhṭa-kāma-dhuk: bestower of all wishes