Where does “обставливать” come from?

обставливать (Russian) comes from Russian обста́вить, from Russian ста́вить, from Old East Slavic ставити, from Proto-Slavic stàviti.

Definitions

Ancestry of “обставливать”, step by step

Step	Language	Word	Meaning
1	Russian	обста́вить	—
2	Russian	ста́вить	to place
3	Old East Slavic	ставити	—
4	Proto-Slavic	stàviti	—

Every word from Proto-Slavic stàviti →

обставливать — Etymology, Origin & Word History | Etymology Explorer