Where does “𑘥𑘴” come from?

𑘥𑘴 (Old Marathi) comes from Sanskrit भू, from Proto-Indo-European bʰuH- — to become, grow, appear.

Ancestry of “𑘥𑘴”, step by step

Step	Language	Word	Meaning
1	Sanskrit	भू	the act of becoming or arising; the place of...
2	Proto-Indo-European	bʰuH-	to become, grow, appear