Spēništa — hearth fire
Household and sustaining flame
Spēništa is shown at the heart region as the body's visual hearth, a mnemonic for the sustaining household flame in the five-fire list. This placement is an editorial metaphor for warmth and continuity and does not equate ritual fire with cardiac function.
Point 5 of 5 in Zoroastrian Five Fires
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Bundahišn (Zand-Āgāhīh), Greater Bundahišn chapter 17 (primary_canonical)
Chapter 17 includes Spēništa among the five fires and associates it with the household fire; the heart-region placement is a symbolic hearth analogy, not a textual cardiac location.