GVY: Text Six

yatpurushena havisha
deva yajnam atanvata
vasanto asyasidajyam .

grishma idhmash sharaddhavihiWhen the devas (the demigods or beings of light) performed a yajna (or sacrificial ritual), using the Purusha as the havis (sacrificial material) for the yajna (ritual), the Vasanta (spring) became the ajya (ghee), the Grishma (summer) served as idhma (pieces of wood) and the sharad (autumn) filled the place of havis (oblatory material like the purodasha or rice-cake).