Where does “дѣлꙗ” come from?

дѣлꙗ (Old Church Slavonic) comes from Proto-Slavic děľa — because of.

дѣлꙗ (Old Church Slavonic): for, because of

Definitions

Step	Language	Word	Meaning
1	Proto-Slavic	děľa	because of

дѣлꙗ — Etymology, Origin & Word History | Etymology Explorer