prep. by, according to; with; through the authority or action of

Dovahkiin, Dovahkiin, naal ok zin los vahriin, wah dein vokul mahfaeraak ahst vaal!
Dragonborn, Dragonborn, by his honor is sworn, To keep evil forever at bay!
(Book, Songs of Skyrim)

Naal Thu'umu, mu ofan nii nu, Dovahkiin, naal suleyk do Kaan, naal suleyk do Shor, ahrk naal suleyk do Atmorasewuth.
By our Voice we give it now (to you), Dragonborn, by (the) power of Kyne, by the power of Shor, and by the power of Atmora-of-old.
(Greybeards, 000C43A7)

Het mah tahrodiis tafiir Skorji Lun-Sinak, wen klov govey naal rinik hahkun rok togaat wah gahrot.
Here fell the treacherous thief Skorji Leech-Fingers, whose head was removed by the very axe he was attempting to steal.
(Word Wall for Lun, Marked for Death)

Zu'u uth nall [sic] thurri [sic] dein daar miiraak.
I (was) ordered by my lord to keep/guard this portal.
(Nahkriin, 000E16FA)

Not used to mean ‘at’ or ‘near’.