Related for Shevuot 7:10

[The owner can make his] tenant [swear an oath] whenever he is a tenant. If he leaves his tenancy, behold he is like any other man. A joint owner [can be made to swear by his partner] whenever he is a joint owner. If he leaves his partnership, behold he is like any other man. An administrator—whenever he is an administrator. If he leaves his administratorship, behold he is like any other man.