x1 possesses/owns/has x2 under law/custom x3; x1 is owner/proprietor of x2 under x3.
(x3 is generally more important to the concept than commonly accepted for the English equivalent, since the concept is broader when unconstrained, and the nature/interpretation of possession/ownership is very culturally dependent); See also ckini, ralte, jitro, steci, srana, tutra, turni, zivle.