Find Grunt Kor'ja and heal her wounds using Lesser Heal (Rank 2). Afterwards, grant her Power Word: Fortitude and then return to Tai'jin at Razor Hill.
1x Heal and fortify Grunt Kor'ja
You be ready for your first test, [player]. South of Razor Hill, just outta town, one of our grunts be hurt fightin' off some o' Proudmoore's old troops. She not doin' too well, an' she benefit much if one of our kind could help her. Find her--her name be Kor'ja--heal her wounds, an' give her the blessin' of our ancestors.
You do this, an' me thinks that be sufficient proof that you ready to move on in our ways.