Sat-sudra is a classification used to describe high-caste groups who are originally Brahmins, Kshatriyas, or Vaishyas but do not follow their Vedic rites, hence becoming sudras in ritual rank.
[2][3][4] According to Puranic texts, the Sakas, Yavanas, Bahlikas, Kambojas, and Dravidas are Noble Kshatriyas all described as part of the Indo-Aryan peoples.
[8][9] According to the sacred Hindu text Bhagavad Gita verse 13.2: "Janmanā jāyate śūdraḥ saṁskārād dhi bhaved dvijaḥ," meaning everyone is born śūdra by birth, by samskara one upgrades to dvija status.
It was a sacrifice aimed at obtaining divine sanction from the original creator – Brahma or Prajapati – who were believed to be born from a Hiranyagarbha, or golden conception.
Subsequently, the donor enters the "golden womb" while priests perform rites similar to those for a pregnant woman, including garbhadhana, pumsavana, and simantonnayana.