ahaṁ kratur ahaṁ yajñaḥ svadhāham aham auṣadham
mantroham aham evājyam aham agnir ahaṁ hutam
ahaṁ -I am
kratur -the sacrifice from the burnt offering
yajñaḥ -the sacrifice in science of action
svadhāham -that is under my control
auṣadham -the medicine for the body
mantroham -of the mantras recited to me
evājyam -surely (eva) the clarified butter (ajyam)
agnir -the fire in the sun
ahaṁ I am
hutam -the one summoned/called/invited
I am the sacrifice from the burnt offering. I am the sacrifice in science of action that is under my control. I am the medicine for the body of the mantras recited to me. I am, surely of the clarified butter. I am the fire in the sun, I am the one summoned/called/invited.
This tells us why we as Hindu’s partake in ritual worship. This verse informs us the reason for anything we do, and what we do.
What does it say in Gita?
What I have is not that much different from what is in the text here, however it is not one and the same, example svadhaham is not ancestral offering.