Shin ש — fire / head
Mother letter; consuming fire
Shin is the Mother of fire. The head locus is the editorial projection specified for this corpus, linking fire with the head and speech while preserving the distinction between symbolic correspondence and anatomy.
Point 3 of 22 in Sefer Yetzirah Letter Body
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Sefer Yetzirah (primary_canonical)
Chapters 3–5 classify the three Mothers, seven Doubles, and twelve Elementals, with planetary and zodiacal correspondences; cited by chapter and section in Kaplan’s standard English edition.
Aryeh Kaplan, Sefer Yetzirah: The Book of Creation in Theory and Practice (secondary_translation)
Commentary and tables explain the letter groups, planets, zodiac signs, and later body analogies; see commentary to chapters 3–5.