Where does “𑣿” come from?

𑣿 (Hiri Motu) comes from Sanskrit ॐ, from Sanskrit ओ — ow, ouch.

Ancestry of “𑣿”, step by step

Step	Language	Word	Meaning
1	Sanskrit	ॐ	om; aum; the sacred syllable and mantra in...
2	Sanskrit	ओ	ow, ouch