Where does “waśara” come from?

waśara (Proto-Finnic) comes from Proto-Indo-Iranian wáȷ́ras, from Proto-Indo-European weǵ- — lively, awake; strong.

Ancestry of “waśara”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-Iranian	wáȷ́ras	strong, hard; a mace, club or any such weapon
2	Proto-Indo-European	weǵ-	lively, awake; strong

waśara — Etymology, Origin & Word History | Etymology Explorer