In Hinduism, the concept of Navagvas holds significance within the lineage of Angiras, one of the revered Saptarishis or Seven Sages. Descendants of Angiras, known as Angirasas, who performed a Sattrayaga—a sacrificial ritual typically spanning twelve months—and achieved their desired results within nine months were termed as 'Navagvas.' Similarly, those who attained their goals within ten months were known as 'Dashagvas.' This classification is mentioned in the Rig Veda (1.62.4).
The Navagvas and Dashagvas are sometimes equated with the
Saptarishis themselves, further elevating their importance within Hindu
cosmology. It's believed that they reside in the pitrloka, the realm of
ancestors or manes, and they are said to accept obsequial offerings from their
descendants.
This concept underscores the significance of time and
efficacy in ritual performance within Hindu tradition, with the achievement of
desired outcomes within a shortened timeframe being seen as particularly
auspicious and indicative of spiritual prowess.