Where does “जरा” come from?

जरा (Sanskrit) comes from Proto-Indo-European ǵerh₂- — to grow old, to mature.

जरा (Sanskrit): old age

Definitions

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵerh₂-	to grow old, to mature

जरा — Etymology, Origin & Word History | Etymology Explorer